ACR Electronics ME406P INSTALLATION

ME406P

Emergency Locator Transmitter

Description, Operation, Installation and Maintenance Manual

This manual includes data for the equipment that follows:

Component

Emergency Locator Transmitter 453-6611 ME406P

Part No. Model No.

ARTEX PRODUCTS / ACR ELECTRONICS, INC

5757 Ravenswood Rd, Ft. Lauderdale, FL 33312

25-62-31

Cage Code: 18560

Page 1 of 85

JUN 25/13

570-1700 Rev. H

Initial Issue JAN 05/2007

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

PROPRIETARY INFORMATION

This document contains proprietary information and such information may not be disclosed to others for any
purpose, nor used for manufacturing purposes without written permission from ACR Electronics.

Information in this manual is subject to change without notice. ACR Electronics makes no warranty, expressed
or implied, with regard to this manual, including but not limited to any implied warranties of merchantability,
fitness for a particular purpose, and non-infringement. In addition, ACR Electronics makes no warranty with
regard to the documentation or data contained herein. ACR Electronics is not liable in the event of incidentals,
special, consequential, or any other damages in connection with or arising from furnishing, performance, or
use of this manual.

Reproduction of this publication or any portion thereof by any means is prohibited. for further information con­tact Sales, ACR Electronics, 5757 Ravenswood Rd, Fort Lauderdale, FL 33312. Telephone [phone].

AIRWORTHINESS LIMITATIONS

The Airworthiness limitations section is FAA approved and specifies inspections and other maintenance

required under 14 CFR§ 43.16 and 91.403, unless an alternative program has been approved.

IMPORTANT NOTICE

ACR Electronics will be responsible for full distribution and revisions of ICA’s (Instructions for Continued

Airworthiness) For inquiries regarding the content and currency of this manual, contact ACR Electronics,

5757 Ravenswood Rd, Fort Lauderdale, FL 33312. Telephone [phone].

25-62-31

Page 2 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

RECORD OF REVISIONS

REVISION CHANGE DATE REVISION CHANGE DATE

- RELEASE Jan 05/2007

- DCN 2998 May 09/2007

- DCN 3135 Jul 09/2007

A DCN 3076 Sep 27/2007

B DCN 3227 May 19/2009

B DCN 3413 Mar 30/2009

C DCN 3571 Jan 12/2010

D DCA W9414 Apr 06/2010

E ECO 14756 Jul 27/2011

F ECO 14850 Mar 09/2012

G ECO 15380 May 03/2013

H ECO 15420 Jun 25/2013

25-62-31

Page 3 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

SERVICE BULLETIN LIST

SERVICE

BULLETIN NO

ISSUE

DATE

SUBJECT

MANUAL

REV NO

MANUAL

REV DATE

25-62-31

Page 4 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

LIST OF EFFECTIVE PAGES

SUBJECT PAGE DATE SUBJECT PAGE DATE

Title Page 1 May 3/13 Description and Operation 30 May 3/13

Notices 2 May 3/13 (cont.) 31 May 3/13

Record of Revisions 3 May 3/13 Test and Fault Isolation 32 May 3/13

Service Bulletin List 4 May 3/13 33 May 3/13

List of Effective Pages 5 May 3/13 34 May 3/13

6 May 3/13 35 Jun 25/13

Table of Contents 7 May 3/13 36 May 3/13

8 May 3/13 37 May 3/13

9 May 3/13 38 May 3/13

10 May 3/13 39 May 3/13

List of Figures 11 May 3/13 40 May 3/13

Introduction 12 May 3/13 41 May 3/13

13 May 3/13 42 May 3/13

14 May 3/13 43 May 3/13

15 May 3/13 44 May 3/13

16 May 3/13 45 May 3/13

17 May 3/13 Removal 46 May 3/13

18 May 3/13 47 May 3/13

19 May 3/13 48 May 3/13

20 May 3/13 Installation 49 May 3/13

21 May 3/13 50 May 3/13

Description and Operation 22 May 3/13 51 May 3/13

23 May 3/13 52 May 3/13

24 May 3/13 53 May 3/13

25 May 3/13 54 May 3/13

26 May 3/13 55 May 3/13

27 May 3/13 56 May 3/13

28 May 3/13 57 May 3/13

29 May 3/13 58 May 3/13

25-62-31

Page 5 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

SUBJECT PAGE DATE SUBJECT PAGE DATE

Installation 59 May 3/13 73 May 3/13

(cont.) 60 May 3/13 74 May 3/13

61 May 3/13 75 May 3/13

62 May 3/13 Appendix A 76 May 3/13

63 May 3/13 77 May 3/13

64 May 3/13 Illustrated Parts List 78 May 3/13

65 May 3/13 79 May 3/13

66 May 3/13 80 May 3/13

67 May 3/13 81 May 3/13

68 May 3/13 82 May 3/13

69 May 3/13 83 May 3/13

70 May 3/13 84 May 3/13

71 May 3/13 85 May 3/13

72 May 3/13

25-62-31

Page 6 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

TABLE OF CONTENTS

RECORD OF REVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

SERVICE BULLETIN LIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

LIST OF EFFECTIVE PAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

LIST OF FIGURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

INTRODUCTION

1. Manual Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

A. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

B. Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2. Model Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

A. ME406P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3. Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

A. ME406P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

B. Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

C. RTCA DO-160D Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 1. Environmental Categories Breakdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4. Frequency Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

A. Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

B. Discussion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5. List of Acronyms, Abbreviations, and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

A. Regulatory Documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

B. Other Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

DESCRIPTION AND OPERATION

1. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

A. Functional Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

B. Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

A. Operational Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

B. In-Flight Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

C. Manual Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

D. Portable Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

E. ELT Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

F. Functional Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

A. Environmental and Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 2. Environmental and Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

B. Electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

25-62-31

Page 7 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

Table 3. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

C. Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 4. Antenna Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

TEST AND FAULT ISOLATION

1. Inspection and Test Regulatory Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

A. United States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

B. Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

C. Other Countries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2. Inspection and Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

A. Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 5. ELT Inspection and Test Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

B. Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

C. Coax Cable, Wiring Connections, and Miscellaneous Inspection – Item 1 . . . . . . . . . . . . . . . 35

D. Mounting Tray and Hardware Inspection – Item 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

E. Battery Pack Inspection – Item 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

F. G-Switch Functional Check – Item 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

G. Performance Testing Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

H. 121.5 MHz Frequency Measurement – Item 5a. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

I. Audio Modulation Check – Item 5b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

J. 121.5 MHz Power Output Measurement – Item 5c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

K. 406 MHz Frequency Measurement – Item 5d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

L. 406 MHz Power Output Measurement – Item 5e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

M. Current Draw Test – Item 5f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

N. Digital Message Verification – Item 5g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

O. ELT Reset Check – Item 5h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

P. Installed Transmitter Test – Item 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Q. Antenna Test – Item 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

R. Inspection and Test Documentation – Item 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

3. Fault Isolation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

A. Self-Test Error Troubleshooting Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Table 6. ELT Self-Test Error Codes Troubleshooting Guide. . . . . . . . . . . . . . . . . . . . . . . . . 43

B. ELT Troubleshooting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 7. ELT Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

REMOVAL

1. ELT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

A. ELT Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

2. Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

A. Battery Pack Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

3. Material or Equipment Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

A. Shipment Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

B. Return Material Authorization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Page 8 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

INSTALLATION

1. Regulatory Requirements and Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

A. TSO C126, Paragraph D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

B. FAA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

C. Canada. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

D. Other Countries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

E. RTCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

2. Mounting Tray. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

A. Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

B. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

3. Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

A. Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

B. Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

C. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

4. Remote Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

A. Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

B. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

5. Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

A. Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

B. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

6. Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

A. General Considerations and Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

B. Remote Switch Harness Fabrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

C. ELT D-Sub Plug Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

D. Cockpit Remote Switch 9-Pin Plug Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

E. Wiring Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

F. Antenna Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

G. Cockpit Remote Switch Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

H. Remote Switch Alternate Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

I. Airframe Ground Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

J. Buzzer Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

K. Remote Switch Final Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

7. ELT Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

A. Installation and Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

B. Harness ELT D-Sub Plug Sealing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

C. Installation Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

8. Battery Pack Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

A. Battery Reinstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

B. New Battery Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

9. Helicopter Installations - Special Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

A. Background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

B. Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

C. Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

25-62-31

Page 9 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

APPENDIX A – ELT REGISTRATION

1. Background Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

A. Hex ID Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

B. Reason for Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

C. Registration Information Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

2. Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

A. Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

B. Required Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

C. Where to Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

ILLUSTRATED PARTS LIST

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

A. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

B. IPL Usage Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

2. Manufacturer Name and Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

A. Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

3. Explanation of Detailed Parts List Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

A. Fig # & Item Column. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

B. Part # Column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

C. Nomenclature Column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

D. UPA (Units Per Assembly) Column. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

4. Detailed Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

25-62-31

Page 10 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

LIST OF FIGURES

Figure 1. ELT Orthogonal Axes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 2. ME406P ELT and Mounting Tray Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 3. Remote Switch Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 4. Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 5. Battery Pack Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 6. Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 7. ELT Operational Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 8. ME406P Portable Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 9. Performance Testing Equipment Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 10. Current Draw Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 11. Short and Long 406 MHz Message Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 12. ELT Removal Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Figure 13. Battery Pack Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Figure 14. ME406P ELT Outline and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 15. Typical Mounting Tray Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Figure 16. Rod 110-338, Whip 110-773, and Portable 110-775 Antenna Outlines and Dimensions . . . . . . 56

Figure 17. Remote Switch Outline and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Figure 18. Buzzer Outline and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Figure 19. Metal Airframe Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Figure 20. Composite Airframe Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Figure 21. Remote Switch Harness Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Figure 22. D-Sub Plug Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Figure 23. ELT Installation Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Figure 24. Velcro Strap Installation & Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Figure 25. Battery Pack Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Figure 26. ELT Orthogonal Axes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

llustrated Parts List

Figure 27. ME406P ELT Main Assembly and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Figure 28. Electrical Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Figure 29. Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

25-62-31

Page 11 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-990-801

1. Manual Usage

SUBTASK 25-62-31-990-001

A. General

(1) This manual describes the operation, installation, and maintenance of the Model ME406P

emergency locator transmitter (ELT). This information is provided to ensure initial and
continued airworthiness. Information presented in this manual is accurate at time of printing,
but is subject to change. Refer to the Artex products web site at www.acrartex.com
latest information and any updates to this manual.

(2) Information on COSPAS-SARSAT emergency locator beacon registration requirements and

procedures is provided in Appendix A – ELT Registration on page 76.

ME406P (453-6611)

INTRODUCTION

for the

(3) Web links provided in this manual were accurate at time of printing, but may be subject to

change.

(4) ACR Electronics reserves the right to add approved components to the ELT system; including,

but not limited to antennas, remote switches, and coaxial cables.

(5) Regulatory references contained herein are generally confined to United States and Canadian

requirements and, in any case, should not be considered all encompassing. Consult your
national aviation authority for applicable requirements.

SUBTASK 25-62-31-990-002

B. Application

(1) This manual constitutes supporting data/documentation for the ME406P ELT, including:

(a) Description and Operation

(b) Test and Fault Isolation (includes inspection criteria)

(c) Removal

(d) Installation

(e) Registration

(f) Illustrated Parts List

(2) In the United States, the ME406P ELT must be installed and maintained in accordance with

the requirements herein and 14 CFR, FAR Parts 43, and 91; and other airworthiness
requirements, as applicable.

(3) In Canada, the ME406P ELT must be installed and maintained in accordance with the

requirements herein and Canadian Aviation Regulations (CAR), Part V, Paragraph 551.104 and
other CAR airworthiness requirements, as applicable.

25-62-31

Page 12 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

+Z

-Z

+X

-X

-Y

+Y

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

(4) ME406P ELT installation and maintenance in all other countries must comply with the

requirements herein and applicable national airworthiness requirements.

(5) The accessories (i.e., remote switch and antennas) addressed in this manual are the

accessories most commonly associated with the ME406P ELT. Other options, such as a
different remote switch configuration or a navigation interface device, should be installed and
maintained in accordance with the written instructions specific to the accessory.

NOTE

: Contact ACR Electronics, Inc., for optional accessories approved for use with a

ME406P ELT.

(6) To ensure proper operation, only parts listed in the Illustrated Parts List of this manual or

those recommended by ACR Electronics, Inc., may be used as replacement parts for the
ME406P ELT.

TASK 25-62-31-990-802

2. Model Description

SUBTASK 25-62-31-990-001

ME406P (453-6611)

A. ME406P

(1) The ME406P is a type AF (Automatic Fixed) and type AP (Automatic Portable) beacon, which

transmits on 121.5 and 406 MHz.

(a) When functioning as a type AF ELT, the ME406P is connected to a cockpit remote switch

and a fixed antenna mounted on the exterior of the aircraft.

(b) When functioning as a type AP ELT, the ME406P is intended only for operation outside of

the aircraft. In this mode of operation, the ELT is configured with an auxiliary antenna,
which is stowed during flight and deployed for portable use.

(2) The ME406P ELT is designed for helicopter installations and features a 5-axis G-Switch module

in addition to the primary G-switch, which is oriented to line-of-flight. This design allows the
ELT to be activated in all six axes. See Figure 1. ELT Orthogonal Axes.

Figure 1. ELT Orthogonal Axes

(3) The ME406P ELT is enclosed in an impact resistant plastic casing and mounts on a tray made

of similar material.

(4) When ordered as a system, an installation kit, cockpit remote switch, coax cable, audible

buzzer, fixed antenna, and portable antenna are provided.

Page 13 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-990-803

3. Approvals

SUBTASK 25-62-31-990-001

A. ME406P

(1) FAA TSO C126, Type AF and Type AP

(a) The conditions and tests required for TSO approval of this article are minimum

performance standards. It is the responsibility of those installing this article either on or
within a specific type or class of aircraft to determine that the aircraft installation
conditions are within TSO standards. TSO articles must have separate approval for
installation in an aircraft. The article may be installed only if performed under 14 CFR
Part 43 or the applicable airworthiness requirements.

(2) Transport Canada - Approval Letter File Reference 5012-E3-4 (3708020)

(3) Industry Canada - Certification Number 1215B-ME406AF

ME406P (453-6611)

(4) ETSO 2C126 - EASA.IM.21O.743

(5) COSPAS-SARSAT - Certificate No. 152, 188, 197, and 242

SUBTASK 25-62-31-990-002

B. Battery

CAUTION

(1) The lithium battery pack used on the ME406P ELT is certified under TSO C126.

SUBTASK 25-62-31-990-003

C. RTCA DO-160D Compliance

(1) DO-160D Environmental Categories:

(2) The DO-160D environmental categories breakdown is detailed in Table 1 on page 15.

: LITHIUM BATTERY SAFETY CONCERNS INCLUDE THE POSSIBILITY OF FIRE, VENTING

VIOLENTLY, AND VENTING OF TOXIC GASES.

(a) The conditions and tests required for TSO approval of this battery are minimum

performance standards. It is the responsibility of those desiring to install this battery in a
specific type or class of aircraft to determine that the aircraft installation conditions are
within the TSO standards. The battery may be installed only if further evaluation by
applicant documents an acceptable installation and is approved by the Administrator.

D1XBC[204][204]XRXXFXXZAZA[204]H[XXXX]XXA

25-62-31

Page 14 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

Table 1. Environmental Categories Breakdown

CATEGORY SECTION DESCRIPTION

D1 4.0 Temperature/Altitude

X 4.5.4 In-Flight Loss of Cooling

B 5.0 Temperature Variation

C6.0 Humidity

204 7.0/8.0 Operational Shock and Crash Safety/Vibration

X 9.0 Explosion

R 10.0 Waterproofness

X 11.0 Fluids Susceptibility

X 12.0 Sand and Dust

F 13.0 Fungus

X 14.0 Salt Spray

X 15.0 Magnetic Effect

Z 16.0 Power Input

A 17.0 Voltage Spike

Z 18.0 Audio Frequency Susceptibility

A 19.0 Induced Signal Susceptibility

204 20.0 Radio Frequency Susceptibility

H 21.0 Emission of RF Energy

XXXX 22.0 Lightning

X 23.0 Lightning Direct Effects

X 24.0 Icing

A 25.0 ESD

25-62-31

Page 15 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-990-804

4. Frequency Allocations

SUBTASK 25-62-31-990-001

A. Application

(1) This section addresses the 406.0-406.1 MHz transmitter window and the specific frequency

band allocations residing above 406.025 MHz, beginning with 406.028 MHz, which are
assigned or reserved within the 406.0-406.1 MHz distress frequency window.

SUBTASK 25-62-31-990-002

B. Discussion

(1) The 406 MHz transmitter frequency of the ME406P ELT was originally 406.028 MHz. In order

to comply with COSPAS-SARSAT frequency allocation requirements, changes to the 406 MHz
frequency may occur since the original release of this product.

(2) While the original ME406P ELTs covered by this manual transmit on 406.028 MHz, current

ME406P ELTs may not. The product identification label on each ELT specifies the transmitting
frequencies of the individual ELT. The 406 MHz component may be 406.028, 406.037 MHz,
etc. Allocation of frequencies, based on beacon population per specified frequency band, is
controlled by COSPAS-SARSAT.

ME406P (453-6611)

(3) The frequency references throughout this manual for the 406 MHz component should be

considered the baseline and the specific frequency indicated on the ELT product label should
be substituted if it differs from 406.028 MHz.

25-62-31

Page 16 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

TASK 25-62-31-990-805

5. List of Acronyms, Abbreviations, and Definitions

SUBTASK 25-62-31-990-001

Term

AC Advisory Circular – A Federal Aviation Administration (USA) bulletin

AWG American Wire Gauge – An electrical wire diameter standard. Look for

BNC CONNECTOR A very common type of coax cable connector having a 50  imped-

CAR Canadian Aviation Regulations – The rules and regulations governing

CFR Code of Federal Regulations – The general and permanent rules pub-

CONTAINER The term “Container”, within the context of this document, refers to a

Definition

with special information. For the purposes of this document, the acro­nym AC does not refer to electrical alternating current.

this acronym in front of or following a wire size number.

ance and used for RF signal connections.

the manufacture, certification, operation, maintenance, and alteration
of aircraft in Canada.

lished in the Federal Register by the executive departments and
agencies of the Federal Government. Title 14, “Aeronautics and
Space” contains the FARs.

device designed to suppress RF signals, such that the broadcast of an
ELT placed in the container cannot reach the SAR satellite system.

COSPAS-SARSAT The international search and rescue consortium that governs the

international satellite-based search and rescue distress alert detection
and information distribution system. For a complete description go to
the official web site for the International COSPAS-SARSAT Program.

D-SUB CONNECTOR D-shaped, subminiature connectors – common type of connector for

small signals and electrical currents.

DER Designated Engineering Representative – An individual qualified and

designated by the FAA to approve, or recommend approval, of tech­nical data to the FAA.

DRIP LOOP Extra wire length used to form a U-shaped bend in a wire or cable.

Water or other fluids will flow down to the bottom of the loop and
drip off. Electrical connections are made at the top of the loop.

ELT Emergency Locator Transmitter – ELTs are installed on aircraft and

used to send emergency signals to the SAR satellite system. The
word “Beacon” is associated with these devices.

EMI Electromagnetic Interference – An undesirable disturbance that

affects an electrical circuit due to either electromagnetic conduction

25-62-31

Page 17 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

or electromagnetic radiation emitted from an external source. Also
called radio frequency interference or RFI.

EUROCAE European Organization for Civil Aviation Equipment – EUROCAE docu-

ments are widely referenced as a means of compliance to European
Technical Standard Orders (ETSOs) and other regulatory documents.

FAA Federal Aviation Administration – The United States government

agency for aircraft safety and regulation.

FAR Federal Aviation Regulations – The rules and regulations governing

the manufacture, certification, operation, maintenance, repair, and
alteration of aircraft in the United States.

FORM 337 FAA Form 337 is required anytime a major repair and/or major alter-

ation is performed on an aircraft. Refer to FAR, Part 43, Appendix A
and the definitions of Major Repair/Alteration contained in FAR, Part 1
for guidance.

FSDO Flight Standards District Office – FAA district offices responsible for

aircraft certification, operation, maintenance, and modification issues,
approvals and enforcement.

G-SWITCH A velocity switch that detects sudden de-acceleration and is used to

automatically activate an ELT. May also be referred to as a “crash
sensor”.

LED Light Emitting Diode – Semiconductor device that emits light when

current is passed through it. Usually used as a status or warning indi­cator.

MIL The three-letter acronym that stands for “Military” and proceeds mili-

tary specifications and standards numbers (e.g., MIL-W-XXXX would
indicate a wire specification and MIL-STD-XXXX would indicate a
standard).

P/N Part Number – Refers to an ACRACR part number, unless otherwise

noted. Part numbers are also indicated with parentheses (e.g., XXX­XXXX).

PLUG The term “Plug”, within the context of this document, refers to the

male half of an electrical connector.

RECEPTACLE The term “Receptacle,” within the context of this document, refers to

the female half of an electrical connector.

RF Radio Frequency – The range of electromagnetic radiation that con-

stitutes the radio spectrum and corresponds to the frequency of alter­nating current electrical signals used to produce and detect radio
waves.

25-62-31

Page 18 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

RTCA Radio Technical Commission for Aeronautics – Organization that

makes recommendations for airworthiness. Refer to

www.rtca.org/aboutrtca.asp

RTV A rubbery silicon-based adhesive typically used to prevent vibration

problems and water intrusion.

SAR Search and Rescue

SCREEN ROOM The term “Screen Room”, within the context of this document, refers

to a room designed to suppress RF signals, such that the broadcast of
an ELT placed in the screen room cannot reach the SAR satellite sys­tem.

SERVICE LOOP A length of wire or cable, at the connection point, of sufficient length

to allow a component to be withdrawn from its mounting position and
disconnected from its associated wiring.

TETHER A tether is a cord or similar device that anchors something movable

to a stationary point or anchors two items together, such that they
cannot become separated beyond the length of the tether.

for more information.

TSO Technical Standard Order – A TSO is a minimum performance stan-

dard issued by the FAA for specified materials, parts, processes, and
appliances used on civil aircraft.

UTC Coordinated Universal Time – A time standard based on International

Atomic Time. UTC is the time system used in aviation and is often
associated with Greenwich Mean Time (GMT) and/or “Zulu” time.

VHF Very High Frequency – The 30 MHz to 300 MHz radio frequency band.

VSWR Voltage Standing Wave Ratio – Electrical signals will “echo” back on a

wire if load impedance is not matched to the impedance of the wire.
VSWR is a measurement of the amount of voltage being “echoed,”
compared to the original signal.

25-62-31

Page 19 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-990-806

6. References

SUBTASK 25-62-31-990-001

A. Regulatory Documents

(1) The following regulatory documents are referred to herein. When referring to such

documents, it is the manual user’s responsibility to ensure they are using the latest revision or
release of such documents. To that end, the revision designator of specific document numbers
has not been included, with the exception of the RTCA document listing, which reflects the
revision level of the documents at the time of TSO testing and certification.

(2) Except in the case of a printed manual, reference documents available on-line or source

locations are linked to applicable web sites.

(3) United States

(a) AC 43-9, “Maintenance Records”

ME406P (453-6611)

(b) AC 43-210, “Standardized Procedures for Requesting Field Approval of Data, Major

Alterations, and Repairs”

(c) AC 43.9-1, “Instructions for Completion of FAA Form 337”

(d) AC 43-13-1, “Acceptable Methods, Techniques, and Practices – Aircraft Inspection and

Repair”

(e) AC 43.13-2, “Acceptable Methods, Techniques, and Practices - Aircraft Alterations”

(f) FAR, Part 43, “Maintenance, Preventive Maintenance, Rebuilding, and Alteration”

(g) FAR, Part 91, “General Operating and Flight Rules”

(4) Canada

(a) CAR, Part V, “Airworthiness”

(b) CAR, Part VI, “General Operating and Flight Rules”

(5) COSPAS-SARSAT

(a) C/S G.005, “Cospas-Sarsat Guidelines on 406 MHz Beacon Coding, Registration and

Type Approval”

(b) C/S S.007, “Handbook of Beacon Regulations”

(6) RTCA – The following documents are available for purchase at RTCA’s Web Site www.rtca.org

or by mail:

,

(a) DO-160D, “Environmental Conditions and Test Procedures for Airborne Equipment”

(b) DO-178B, “Software Considerations in Airborne Systems and Equipment Certification”

(c) DO-182, “Emergency Locator Transmitter (ELT) Equipment Installation and

Performance”

25-62-31

Page 20 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

(d) DO-183, “Minimal Operational Performance Standards for Emergency Locator

Transmitters - Automatic Fixed-ELT (AF), Automatic Portable-ELT (AP), Automatic
Deployable-ELT (AD), Survival-ELT (S) Operating on 121.5 and 243.0 MHz”

(e) DO-204, “Minimal Operational Performance Standards for 406 MHz Emergency Locator

Transmitters (ELT)”

SUBTASK 25-62-31-990-002

B. Other Documents

(1) The following documents are available on-line at the Artex products web site at

www.acrartex.com

(a) 570-1000, “ELT Test Set (ETS) Operation Manual”

ME406P (453-6611)

, or from ACR Electronics upon request.

25-62-31

Page 21 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-870-801

1. Description

SUBTASK 25-62-31-870-001

A. Functional Overview

(1) The ELT automatically activates during a crash and transmits the standard sweep tone on

121.5 MHz. Approximately every 50 seconds, for up to 520 milliseconds (long message
protocol), the 406 MHz transmitter turns on. During that time, an encoded digital message is
sent to the COSPAS-SARSAT Search and Rescue (SAR) satellite system.

(2) The information contained in the message includes:

(a) Serial number assigned to the ELT by the beacon manufacturer or the national beacon

registration authority, or

ME406P (453-6611)

DESCRIPTION AND OPERATION

(b) Aircraft identification or registration number, and

(c) Country of registration and country code; plus

(d) Position coordinates, when coupled with a navigation interface device, which receives

position data from the aircraft navigation system and transmits it to the ELT.

(3) The 406 MHz transmitter will operate for 24 hours and then shuts down automatically. The

121.5 MHz transmitter will continue to operate until the batteries are exhausted, which is at
least 50 hours.

(4) The 406 MHz transmitter produces a much more accurate position, typically 3 kilometers as

compared with 15 to 20 kilometers for 121.5 MHz transmitters. When coupled to the aircraft
navigation system via a navigation interface, the accuracy improves to approximately 100
meters.

(5) The ELT transmits a digital message that allows search and rescue authorities to contact the

owner/operator of the aircraft through information contained in a database. Information
contained in the database includes:

(a) Type of aircraft and aircraft registration number,

(b) Owner address and telephone number, and

(c) Alternate emergency contact.

(6) After the ELT is activated and the 406 MHz signal is detected by the SAR satellite system and

a position is calculated, the 121.5 MHz transmissions are used to home in on the crash site.

NOTE

: Effective February 1, 2009, COSPAS-SARSAT has terminated satellite processing of

distress signals from 121.5 MHz beacons.

(7) Aircraft communications transceivers are not capable of receiving 406 MHz transmissions;

therefore, the only methods of monitoring the ELT are:

(a) The blinking cockpit remote switch LED,

25-62-31

Page 22 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

A

A

REMOTE SWITCH

D-SUB RECEPTACLE

STATUS

LED

CONTROL

SWITCH

ANTENNA BNC

CONNECTOR

MOUNTING
TRAY ASSY

ELT MAIN

ASSEMBLY

MOUNTING
TRAY ASSY

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

(b) The buzzer, or

(c) 121.5 MHz transmissions, which can be monitored using the aircraft communications

transceiver or an AM radio tuned to 121.5 MHz.

SUBTASK 25-62-31-870-002

B. Components

(1) The ME406P ELT main assembly is housed in a high impact, fire resistant, polycarbonate

plastic case and mounted in a tray made of similar material. See Figure 2. ME406P ELT and
Mounting Tray Assembly.

NOTE

: The ELT main assembly and its mounting frame assembly are capable of

withstanding extremely harsh environments and have been subjected to the rigorous
environmental testing required by COSPAS-SARSAT for certification.

ME406P (453-6611)

(2) The cockpit-mounted remote switch assembly is comprised of an ELT status LED and control

Figure 2. ME406P ELT and Mounting Tray Assembly

switch and allows an operator to manually turn the ELT on (i.e., activate) for testing and reset

Page 23 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

ARTEX

ON

ARM

Press ON

Wait 1 Second

Press ARM

EMERGENCY USE ONLY

Test/Reset

ELT

LED

SWITCH

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(i.e., deactivate) the ELT. See Figure 3. Remote Switch Front View.

NOTE

: The ELT CANNOT be disarmed or disabled from the cockpit. Cockpit operation is

limited to deactivating or manually activating the ELT.

Figure 3. Remote Switch Front View

(3) The buzzer (i.e., horn) provides an audible alert when the ELT is active. See Figure 4. Buzzer.

Figure 4. Buzzer

(4) The battery pack for the ME406P ELT consists of two “D” size lithium manganese dioxide cells

connected in series. To prevent the cells from being charged, diodes are connected across
each cell and fuses are connected to the output. See Figure 5. Battery Pack Assembly.

Figure 5. Battery Pack Assembly

25-62-31

Page 24 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

110-773

110-338

110-775

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(5) Three antennas are approved for use with the ME406P ELT. Selection of the proper antenna is

dependent upon end use, aircraft configuration and speed, and other factors. See Figure 6.
Antennas.

NOTE

: The 110-775 antenna is only approved for use when the ELT is configured for

portable use.

Figure 6. Antennas

25-62-31

Page 25 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

ELT

“INACTIVE”

ELT “ACTIVE”

BUZZER “ON”

LED “ON”

ELT

SWITCH

“ON”

REMOTE
SWITCH

“ON”

G-SWITCH

“ON”

ELT OR

REMOTE SW

“RESET”

YES

YES

NO

NO

NO

YES

NO

YES

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-870-802

2. Operation

SUBTASK 25-62-31-870-001

A. Operational Overview

(1) See Figure 7. ELT Operational Flow Diagram.

ME406P (453-6611)

Figure 7. ELT Operational Flow Diagram

(2) A primary feature of the ME406P ELT is its simplicity of operation. As long as the ELT is

connected to the remote switch harness ELT connector, such that pins 5 and 12 are jumped
(G-switch loop), it will activate in the event of a crash.

NOTE

: Neither the cockpit remote switch or the ELT local switch can be positioned in such a

manner as to prevent automatic activation when the ELT is connected properly.

(3) ELT operation is designed to prevent human error and misuse in regards to automatic

activation. The ELT cannot be activated by dropping, rough handling or during shipping.

(4) When the ELT is activated, the presence of the emergency sweep tone and the flashing

cockpit remote switch panel LED indicates an active, normal functioning ELT. The cockpit
panel LED must immediately begin to flash continuously upon ELT activation.

(5) The ELT is considered to be either “ACTIVE” or “INACTIVE”. When “INACTIVE”, the ELT is in a

state of rest and performs no functions. Taking the ELT from the “INACTIVE” state to the
“ACTIVE” state requires a positive switch transition from either the cockpit remote switch, ELT
local switch, or G-switch.

Page 26 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

(a) It is possible the primary G-switch or one of the auxiliary G-switches could activate the

ELT in either a fixed or rotor wing aircraft as the result of severe maneuvers or a very
hard landing.

(b) To take the ELT from an “ACTIVE” state back to an “INACTIVE” state, a reset must

occur. See SUBTASK 25-62-31-870-005 on page 28.

(6) A warning buzzer is required under C126 TSO approval. The buzzer is powered by the ELT and

therefore not dependent upon the aircraft battery for operation. It is not designed to operate
continuously, but sounds at predetermined intervals and runs for shorter periods toward the
end of ELT battery life.

(7) When operating in portable mode, the functional differences include:

(a) Activation via the local ELT switch only. The G-switch is disabled when the remote

switch harness plug is removed.

(b) An active ELT is indicated by the flashing LED on the ELT front panel.

(c) The portable antenna must be connected to the ELT.

SUBTASK 25-62-31-870-002

ME406P (453-6611)

B. In-Flight Operation

(1) The cockpit remote switch is in the “ARM” position (i.e., down).

(2) The local switch on the ELT is in the “ARM” position (i.e., down).

SUBTASK 25-62-31-870-003

C. Manual Activation

(1) The ELT may be manually activated by placing either the remote switch or the ELT local

switch in the “ON” position.

NOTE

: As long as the cockpit remote switch and the ELT local switch are in the ARM (off)

positions respectively, the ELT will automatically activate on impact.

SUBTASK 25-62-31-870-004

D. Portable Operation

(1) See Figure 8. ME406P Portable Configuration on page 28.

(2) Disconnect the antenna coax cable and remote switch harness plug.

(3) Open the Velcro strap, lift the front of the ELT and slide it out of the mounting tray.

(4) Attach the portable antenna to the ELT BNC male connector.

(5) Move the toggle switch to the “ON” position to activate the ELT.

(6) Maintain the ELT in an upright position, such that the antenna is vertical, for optimum

performance.

25-62-31

Page 27 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

TETHER

ASSEMBLY

ME406P

PORTABLE

ANTENNA

STATUS

LED

CONTROL

SWITCH

ANTENNA BNC

CONNECTOR

FRONT VIEW

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(7) A tether assembly is attached to the ELT; however, the ELT is not buoyant on its own and a

flotation device is required for deployment in water.

SUBTASK 25-62-31-870-005

E. ELT Reset

(1) If the ELT is activated accidently, it will need to be reset.

(2) Reset the ELT from the cockpit by moving the remote switch to the “ON” position, waiting

approximately one second, and then moving it back to the “ARM” position. If the switch is
already in the “ON” position, move it to the “ARM” position.

(3) Reset the ELT locally by moving the switch on the ELT to the “ON” position, waiting

approximately one second, and then moving it back to the “ARM” position. If the switch is
already in the “ON” position, move it to the “ARM” position.

NOTE

: The ELT cannot be reset if either the cockpit remote switch or the ELT local switch is

in the “ON” position.

SUBTASK 25-62-31-750-001

F. Functional Check

(1) A monthly functional check is recommended to verify operational status of the ELT.

(2) Perform this functional check in accordance with SUBTASK 25-62-31-750-011 on page 41.

Figure 8. ME406P Portable Configuration

25-62-31

Page 28 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-870-803

3. Specifications

SUBTASK 25-62-31-870-001

A. Environmental and Physical

(1) Table 2 lists the environmental and physical specifications of the ME406P ELT.

NOTE

: For automatic activation, the higher threshold of 4.5 ft/sec (2.3 g) is specified in

accordance with Eurocae ED-62. Use of the higher threshold crash sensor has been
approved by the FAA as a deviation to TSO C126 (FAA Reference #98-130S-108,
February 6, 1998).

Table 2. Environmental and Physical Specifications

CRITERIA PARAMETER CHARACTERISTIC

ME406P (453-6611)

Temperature

Mechanical

Automatic Activation

Weight

Dimensions (L x W x H)

Software In accordance with RTCA/DO-178B, Level D

Storage -55° C to +85° C

Operating -20° C to +55° C

Vibration 10

Shock 500

Crashworthiness 100

Humidity 95% for 50 hours

Penetration 55 lbs from 6 in. (25 kg from 15 cm)

Crush 1,000 lbs (454 kg)

Altitude 55,000 ft (16,764 m)

Primary G-Switch 4.5 ±0.5 ft/sec (2.3

Auxiliary Five G-Switches 12

ELT Complete w/Battery Pack, and

Mounting Tray

ELT Complete w/Battery Pack, and

Mounting Tray

6.60 x 3.69 x 2.86 in.

g

, 5 Hz to 2,000 Hz

g

for 4 ms

g

for 23 ms

g

1.95 lbs (0.8 kg)

(168 x 94 x 73 mm)

g

)

25-62-31

Page 29 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

SUBTASK 25-62-31-870-002

B. Electrical

(1) Table 3 lists the electrical specifications of the ME406P ELT.

CRITERIA PARAMETER CHARACTERISTIC

Operating Frequencies

ME406P (453-6611)

Table 3. Electrical Specifications

406.028 MHz, or higher ± 1 KHz

121.5 MHz ± 6.075 kHz

Modulation

Transmitter Duty Cycle

Peak Effective Radiated

Power (PERP)

Occupied Bandwidth

Spurious Emissions

406 MHz Bi-Phase L (G1D)

121.5 MHz Amplitude Modulation (A3X)

440 ms (± 1%), or

406 MHz

121.5 MHz Continuous

406 MHz

Min. 50 mW (17 dBm) PERP for 50 hrs

121.5 MHz

406 MHz 20 KHz max.

121.5 MHz 25 KHz max.

406 MHz Per RTCA/DO-204

121.5 MHz Per CFR Title 47 (FCC), Part 87

Type of Cell Lithium Manganese Dioxide

or 100 mW EIRP (20 dBm) for 48 hrs

520 ms (± 1%), every

50 seconds (± 5%)

3.2 W to 7.2 W (37 dBm ± 2 dBm)
PERP or EIRP for 24 hrs

@ -20° C to +55° C

@ -20° C to +55° C

@ -20° C to +55° C

Battery

Voltage 6.0

Amp-Hour Rating 11.1

25-62-31

Page 30 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

SUBTASK 25-62-31-870-003

C. Antennas

(1) Table 4 lists the specifications of the antennas approved for use with the ME406P ELT.

PARAMETERS

Style Rod Whip Portable

Frequencies 121.5, 406 MHz

ME406P (453-6611)

Table 4. Antenna Specifications

CHARACTERISTIC

110-338 110-773 110-775

VSWR

Polarization Vertical Monopole

Radiation Pattern Omnidirectional

Impedance

(ohms)

Weight

Drag

Coax Cable RG-142 N/A

Connectors BNC Female

Dimensions

(Base-to-Tip)

0.45 lbs

(0.20 kg)

2.90 lbs (1.3 kg) @
350 KTS, 25,000 ft

15.50 in.

(39.4 cm)

121.5 MHz - 2.0:1 Max.

406 MHz - 1.5:1 or Max.

50 Nominal

0.18 lbs

(0.54 kg)

0.66 lbs (0.3 kg) @
600 KTS, 30,000 ft

15.00 in.

(38.1 cm)

2.0 oz.
(57 g)

N/A

16.5 in.

(41.9 cm)

25-62-31

Page 31 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

TEST AND FAULT ISOLATION

TASK 25-62-31-750-801

1. Inspection and Test Regulatory Requirements

SUBTASK 25-62-31-990-001

A. United States

(1) In accordance with FAR Part 91, Subpart C, § 91.207 (d), the ELT must be inspected within 12

calendar months after the last inspection for:

(a) Proper installation;

(b) Battery corrosion;

(c) Operation of controls and crash sensor; and

(d) The presence of a sufficient signal radiated from its antenna.

(2) All maintenance shall be performed in accordance with FAR Part 43, Appendix D, which

requires the following inspections at each annual or 100-hour inspection:

(a) ELT and mount for improper installation;

(b) Wiring and conduits for improper routing, insecure mounting, and obvious defects;

(c) Bonding and shielding for improper installation and poor condition; and

(d) Antenna, including trailing antenna, for poor condition, insecure mounting, and improper

operation.

SUBTASK 25-62-31-990-002

B. Canada

(1) CAR Part VI, Standard 625, Appendix C, requires the ELT to be inspected at intervals not

exceeding 12 months.

(2) All maintenance and testing shall be performed in accordance with the requirements of CAR

Part V, Standard 571, Appendix G, which requires:

(a) Corrosion inspection;

(b) Operational testing;

(c) Performance testing, including:

1

Measured peak power after 3 minutes of operation,

2

Measured frequency after 3 minutes of operation,

3

Audio modulation, which shall be recognizable as a typical ELT signal,

4

Measured current draw in the “ARM” (off) and in the “ON” position, as specified by
the manufacturer, and

5

The automatic activation system.

Page 32 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

SUBTASK 25-62-31-990-003

C. Other Countries

(1) For all other countries, maintenance and testing shall be conducted in accordance with the

requirements of applicable national regulatory authorities and the requirements herein, as
applicable. Local regulations and requirements shall take precedence.

ME406P (453-6611)

25-62-31

Page 33 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-750-802

2. Inspection and Test Procedures

SUBTASK 25-62-31-990-001

A. Checklist

(1) Table 5 provides a list of the ELT inspection and testing requirements, a copy of which may be

used as a checklist to verify inspection and test completion. The item numbers in the table
correspond to the item identifiers for each task.

NOTE

: Items 5a through 5h are mandatory requirements only in Canada, in addition to

meeting the other inspection and test requirements listed in Table 5.

Table 5. ELT Inspection and Test Checklist

ITEM NO. DESCRIPTION BY

ME406P (453-6611)

1 Coax Cable and Wiring Connections Inspection

2 ELT Mounting Tray and Hardware Inspection

3 ELT Battery Pack Inspection

4 G-Switch Functional Check

5a 121.5 MHz Frequency Measurement

5b Audio Modulation Check

5c 121.5 MHz Power Output Measurement

5d 406 MHz Frequency Measurement

5e 406 MHz Power Output Measurement

5f Current Draw Test

5g Digital Message Verification

5h ELT Reset Check

6 Installed Transmitter Test

7 Antenna Test

8 Inspection and Test Documentation

25-62-31

Page 34 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

SUBTASK 25-62-31-000-001

B. Preparation

(1) Remove the ELT in accordance with SUBTASK 25-62-31-010-001 on page 46.

(2) Remove the battery pack in accordance with SUBTASK 25-62-31-050-001 on page 47.

SUBTASK 25-62-31-220-001

C. Coax Cable, Wiring Connections, and Miscellaneous Inspection – Item 1

(1) Check remote switch harness connector for corrosion bent or broken pins and other damage.

(2) Check antenna coax cable connectors for corrosion, bent or broken center conductor, and

other damage.

NOTE

: Pay special attention to the center conductor, which is prone to retracting into the

connector housing.

(3) Check condition of portable antenna and associated BNC connector.

(4) Check condition of tether assembly.

SUBTASK 25-62-31-220-002

D. Mounting Tray and Hardware Inspection – Item 2

(1) Inspect mounting tray for cleanliness, cracks, and other damage.

(2) Check mounting tray hardware for corrosion and security.

(3) Inspect Velcro strap in accordance with SUBTASK 25-62-31-410-001 on page 68 and replace

if worn.

(4) Velcro strap must be replaced under any circumstances requiring a battery replacement.

These circumstances are detailed in SUBTASK 25-62-31-220-003.

SUBTASK 25-62-31-220-003

E. Battery Pack Inspection – Item 3

CAUTION

: THE BATTERY PACK CONTAINS ELECTROSTATIC DISCHARGE SENSITIVE (ESD)

COMPONENTS AND, AS SUCH, IT MUST BE HANDLED WITH CARE. IF POSSIBLE, WEAR
A GROUNDED WRIST STRAP WHEN HANDLING THE BATTERY PACK DURING
INSPECTION AND MAINTENANCE ACTIVITIES. TAKE PARTICULAR CARE TO AVOID
TOUCHING THE EXPOSED CIRCUIT BOARD AND CONNECTOR PINS ON THE BOARD.

CAUTION

(1) Check battery cells, components, and connectors for corrosion and other damage.

(2) Check wiring for breaks, damaged insulation, and improper or damaged connections.

(3) Check housing for cracks and other visual damage.

: DO NOT USE CONTACT CLEANER ON ELT COMPONENTS. SUCH CHEMICAL AGENTS

CAN BE HIGHLY DESTRUCTIVE TO THE MOUNTING HARDWARE AND ELT HOUSING,
CAUSING CRACKING, FRACTURING AND OTHER DAMAGE.

Page 35 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

(4) Remove any corrosion residue from the underside of the ELT.

(5) Check the battery pack expiration date.

(6) Replace the battery pack if any of the following conditions are true:

(a) After use in an emergency;

(b) After an inadvertent activation of unknown duration;

(c) When the total of all known transmissions exceeds one hour; or

(d) On or before battery replacement (expiration) date.

SUBTASK 25-62-31-750-001

F. G-Switch Functional Check – Item 4

ME406P (453-6611)

CAUTION

(1) Reinstall the battery in accordance with SUBTASK 25-62-31-450-001 on page 71.

(2) Perform this functional check within the first 5 minutes after the hour (UTC), as required by

(3) Notify any nearby control tower of your intentions.

(4) Install the 500-0079 ME406 G-Switch Loop Test Connector Fixture on the ELT receptacle or

(5) Verify the ELT switch is in the “ARM” position.

(6) Monitor 121.5 MHz on an AM receiver.

(7) Activate the ELT by using a rapid forward (i.e., throwing) motion in the direction of the arrow

: A JUMPER IS REQUIRED TO PERFORM THIS CHECK. DUE TO THE POTENTIAL OF

PHYSICAL DAMAGE IF THE JUMPER IS IMPROPERLY INSTALLED, THIS STEP SHOULD
ONLY BE PERFORMED BY AN EXPERIENCED TECHNICIAN/MECHANIC.

NOTE

: If tests 5a through 5h are going to be performed, the battery may be temporarily

installed with only two screws, located on a diagonal from each other.

AC 43.13-1, Chapter 12, § 12-22, Note 3.

jumper ELT receptacle pins 5 and 12.

NOTE

: The ELT cannot be activated using this procedure unless pins 5 and 12 on the ELT

receptacle are jumpered. See Figure 19. Metal Airframe Wiring Diagrams on page 60.

on the ELT label, followed by a rapid reversing action.

(8) Verify activation by listening for the aural sweep tone on the receiver.

(9) Reset the ELT by toggling the control switch to the “ON” position and then back to the “ARM”

position.

SUBTASK 25-62-31-750-002

G. Performance Testing Setup

NOTE

: The ELT software routine logs battery life in 30-second increments. A minimum of 30

seconds is added to the battery usage total each time the ELT is activated and de-activated.

25-62-31

Page 36 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

ELT ANTENNA

BNC CONNECTOR

30 dB

ATTENUATOR

(if required)

MEASURING

DEVICE

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

If the ELT is left activated beyond the first 30 seconds, additional time is added in 30­second increments.

NOTE

: Careful planning of the performance tests is necessary to avoid activating the ELT more

than necessary. Plan the performance testing in a manner that allows tests to be run
concurrently and test equipment settings to be quickly switched from one test to another.
By doing so, the three-minute warm-up requirement can be eliminated from a number of
tests and battery run time minimized to a large extent.

(1) Place the ELT in a container or screen room capable of substantially attenuating RF signals, or

the transmitter power output shall be connected to a suitable dummy load to minimize
radiation.

(2) Use the ELT’s own battery pack as the power source for these measurements. An alternate

power source can be used where lengthy servicing, other than the performance tests, is
anticipated.

(3) Ensure that adequate attenuation rated for 406 MHz is installed between the ELT antenna

output and the measurement equipment to prevent damaging input circuitry, if required. At a
minimum, the attenuator should be rated at 30 dB, and 5 watts for a ½-second duration. As
shown in Figure 9. Performance Testing Equipment Setup.

SUBTASK 25-62-31-750-003

SUBTASK 25-62-31-750-004

Figure 9. Performance Testing Equipment Setup

H. 121.5 MHz Frequency Measurement – Item 5a

(1) Connect the measuring device, referring to SUBTASK 25-62-31-750-002 on page 36.

(2) Activate the ELT by placing the control switch in the “ON” position.

(3) Wait three minutes.

(4) Perform SUBTASK 25-62-31-750-004 during the three-minute waiting period.

(5) Measure the frequency after the three-minute waiting period. The frequency must be within

the tolerance specified in Table 3 on page 30.

I. Audio Modulation Check – Item 5b

(1) Perform this check in conjunction with SUBTASK 25-62-31-750-003.

25-62-31

Page 37 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(2) Monitor 121.5 MHz on an AM receiver.

(3) Listen for the aural sweep tone on the receiver. The audio should “sound” like an ELT.

SUBTASK 25-62-31-750-005

J. 121.5 MHz Power Output Measurement – Item 5c

(1) Connect the measuring device, referring to SUBTASK 25-62-31-750-002 on page 36.

(2) Activate the ELT, if necessary, by placing the control switch in the “ON” position.

(3) Wait three minutes.

(4) Read the displayed amplitude for 121.5 MHz. The amplitude must be within the minimum

specified for 121.5 MHz in Table 3 on page 30 at the terminal output.

SUBTASK 25-62-31-750-006

K. 406 MHz Frequency Measurement – Item 5d

CAUTION

(1) Connect the measuring device, referring to SUBTASK 25-62-31-750-002 on page 36.

(2) Activate the ELT, if necessary, by placing the control switch in the “ON” position.

(3) Wait three minutes.

(4) Measure the frequency. Measure the frequency after the three-minute waiting period. The

SUBTASK 25-62-31-750-007

L. 406 MHz Power Output Measurement – Item 5e

CAUTION

(1) Connect the measuring device, referring to SUBTASK 25-62-31-750-002 on page 36.

(2) Activate the ELT, if necessary, by placing the control switch in the “ON” position.

: POWER OUTPUT IS APPROXIMATELY 37 DB (5 WATTS). BE SURE ADEQUATE

ATTENUATION IS INSERTED IN-LINE BETWEEN THE ELT ANTENNA OUTPUT AND THE
MEASURING DEVICE TO PROTECT THE INPUT CIRCUITS OF THE MEASURING DEVICE.

frequency must be within the tolerance specified in Table 3 on page 30.

NOTE

: The exact 406 MHz frequency used is printed on the ELT product label.

: POWER OUTPUT IS APPROXIMATELY 37 DB (5 WATTS). BE SURE ADEQUATE

ATTENUATION IS INSERTED IN-LINE BETWEEN THE ELT ANTENNA OUTPUT AND THE
MEASURING DEVICE TO PROTECT THE INPUT CIRCUITS OF THE MEASURING DEVICE.

(3) Wait three minutes.

(4) Read the displayed amplitude of the 406 MHz burst that follows the three-minute wait period.

The amplitude must be within the minium specified for 406 MHz in Table 3 on page 30, at the
output terminal.

(5) Deactivate the ELT by placing the control switch in the “ARM” position.

25-62-31

Page 38 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

TEST FIXTURE
500-0057

CONNECT ELT FLEX

CABLE HERE

CONNECT TEST FIXTURE

TO BATTERY PACK PLUG

+

A

—

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

SUBTASK 25-62-31-750-008

M. Current Draw Test – Item 5f

ME406P (453-6611)

CAUTION

CAUTION

CAUTION

(1) Verify the ELT control switch is in the “ARM” position.

(2) Separate the battery pack from the ELT. See SUBTASK 25-62-31-050-001 on page 47.

(3) Install test fixture 500-0057 in the power circuit. See Figure 10. Current Draw Test Setup.

(4) Connect the ammeter and set it for the lowest possible scale.

: EXERCISE EXTREME CAUTION TO AVOID CAUSING A SHORT CIRCUIT CONDITION,

WHICH WILL BLOW THE FUSES IN THE BATTERY PACK. THIS TEST SHOULD ONLY BE
PERFORMED BY AN EXPERIENCED TECHNICIAN/MECHANIC.

: ALL “ON” STATE CURRENT MEASUREMENTS MUST BE MADE WITH THE RF OUTPUT

(I.E., ELT ANTENNA CONNECTOR) LOADED WITH 50 OHMS RATED FOR 5 WATTS.
EITHER A RESISTIVE LOAD OR EQUIPMENT WITH 50 OHM IMPEDANCE PADDED WITH
A 10 DB/5 WATT ATTENUATOR. REFER TO SUBTASK 25-62-31-750-002 ON PAGE 36.

: ACR ELECTRONICS DOES NOT RECOMMEND MEASURING THE 406 MHZ BURST,

WHICH DRAWS UP TO 5 AMPS OF CURRENT; HOWEVER, THE AMMETER USED TO
MEASURE THE STEADY STATE CURRENT OF THE 121.5 MHZ TRANSMISSION MUST BE
CAPABLE OF WITHSTANDING A 5 AMP CURRENT DRAW OR MUST HAVE THE READING
SCALE ADJUSTED ACCORDINGLY. KEEP IN MIND THE ELT TRANSMITS A 406 MHZ
BURST WHEN THE ELT IS RESET, IN ADDITION TO A 406 MHZ BURST
APPROXIMATELY EVERY 50 SECONDS.

Figure 10. Current Draw Test Setup

25-62-31

Page 39 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(5) Read the current draw on the ammeter. Measured current must be  2 µA (micro-amps).

(6) Set the ammeter range to accommodate at least 5 A.

(7) Activate the ELT by placing the control switch in the “ON” position.

(a) Read the 406 MHz burst current draw. The 406 MHz burst will draw approximately 3A to

4A. Burst current should not exceed 5A.

(8) Allow the ELT to transmit a 406 MHz burst, which occurs about 50 seconds after activation.

(9) Adjust the ammeter to a scale appropriate for reading less than 200 mA.

(10) Read the steady state current draw on the ammeter, which must be 95 mA.

(11) Disconnect the ammeter before the next 406 MHz burst.

(12) Deactivate the ELT by placing the control switch in the “ARM” position.

(13) Remove the test fixture and reinstall the battery pack in accordance with SUBTASK 25-62-31-

450-001 on page 71.

SUBTASK 25-62-31-750-009

N. Digital Message Verification – Item 5g

(1) Set the 453-1000 ELT Test Set (ETS) beacon reader to receive and decode the ELT digital

message. Refer to the ETS operating manual (570-1000) for ETS operating instructions and
additional details.

NOTE

: A beacon reader equivalent to the ETS may be used, provided it is capable of

receiving and decoding the 406 MHz digital message. Examples of equivalent beacon
readers include the IFR-4000, BT100A, and other models available. Consult
documentation for the beacon tester in question and contact Artex Technical Support
for further information.

NOTE

: The SARTECH 453-0131 ELT tester is no longer supported and cannot properly read

the latest generation of 406 MHz ELTs.

(2) Activate the ELT by placing the control switch in the “ON” position.

(3) Allow the ELT to transmit for approximately 5 seconds.

(4) Deactivate the ELT and read the test message broadcast at “turn-off”. Message examples are

shown in Figure 11. Short and Long 406 MHz Message Examples on page 41.

(a) The test message broadcast by the ELT at “turn-off” contains all the information in an

actual distress message, except there is a special digital prefix that informs COSPAS­SARSAT satellites to ignore the message.

(b) The left hand example in Figure 11. Short and Long 406 MHz Message Examples on

page 41 is an ELT programmed for “User Protocol ELT with Serial Number”, with a test
Hex ID. The right hand example is an ELT programmed for “Standard Location Protocol
ELT with Serial Number”.

(c) Actual messages will vary depending on the protocol and information programmed into

the ELT.

25-62-31

Page 40 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

Sarsat Beacon Reader

Beacon ID = ADDF8E345CD35D0
Message Type = Test, Short
Country = 366 USA
Aviation ELT S/N = 6521
Type Approval # = 152
Aux Locating Devices = No

121.5 MHz Beacon = Yes
Nov 13, 2009 11:39 am 55 sec

ClearDonePrint

Sarsat Beacon Reader

Beacon ID = 2DC75B534AFFBFF
Message Type = Test, Long
Country = 366 USA
Aviation ELT S/N = 6521
Type Approval # = 152
Position = Invalid

121.5 MHz Beacon = Yes
Nov 15, 2009 10:06 am 25 sec

ClearDonePrint

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(d) If the ELT is programmed with a location (long message) protocol and disconnected

from the aircraft navigation system or interface device, the message will indicate
“Position Invalid” in lieu of position data, as shown in the right hand example in "Figure

11. Short and Long 406 MHz Message Examples on page 41.

(5) Repeat the activation and deactivation cycle if the ETS fails to read the message on the initial

try. The 406 MHz oscillator may not be warmed up. If continued attempts to read the
message fail, check for self-test error codes and refer to Table 6 on page 43.

Figure 11. Short and Long 406 MHz Message Examples

SUBTASK 25-62-31-750-010

O. ELT Reset Check – Item 5h

(1) Place the ELT control switch in the “ON” position.

(2) Return the switch to the “ARM” position.

(3) If the ELT is working properly, the LED will stay on for approximately 1 second and then turn

off. If a series of flashes are displayed, refer to Table 6 on page 43.

NOTE

: A 5-flash error indication will occur if the ELT is programmed with a location protocol,

since no navigation input data is present.

SUBTASK 25-62-31-750-011

P. Installed Transmitter Test – Item 6

CAUTION

: DO NOT ALLOW THE DURATION OF THIS TEST TO EXCEED 5 SECONDS. THE ELT

WILL TRANSMIT A 406 MHZ SIGNAL AFTER THE ELT IS ACTIVATED FOR
APPROXIMATELY 47 SECONDS. THE COSPAS-SARSAT SATELLITE SYSTEM WILL
CONSIDER THE 406 MHZ TRANSMISSION TO BE A VALID DISTRESS SIGNAL.

(1) Reinstall the ELT in accordance with SUBTASK 25-62-31-410-001 on page 68.

(2) If required by local aviation regulations, perform the following functional check within the first

5 minutes after the hour (UTC).

(3) Notify any nearby control tower of your intentions.

(4) Tune a receiver, usually the aircraft transceiver, to 121.5 MHz.

NOTE

: An AM radio may be used to receive the signal.

25-62-31

Page 41 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

(5) Activate the ELT by placing the cockpit remote switch in the “ON” position. The LED will begin

flashing continuously.

(6) Listen for 3 audible sweeps on the receiver, which takes about 1 second.

(7) Verify the buzzer sounds immediately upon activation.

(8) Return the cockpit remote switch to the “ARM” (off) position while paying close attention to

LED activity when the ELT enters the “ARM” condition. If the ELT is working properly, the LED
will stay on for approximately 1 second and then turn off.

NOTE

: This test also completes the requirement to check ELT controls by verifying operation

of the remote switch.

(9) Refer to Table 6 on page 43 if the LED displays a series of error code flashes.

SUBTASK 25-62-31-750-012

Q. Antenna Test – Item 7

ME406P (453-6611)

CAUTION

(1) Tune a low quality AM receiver (i.e., radio) to 121.5 MHz.

(2) Place the radio approximately six inches from the antenna.

(3) Activate the ELT by placing the cockpit remote switch in the “ON” position.

(4) Listen for 3 audible sweeps on the radio, which takes about 1 second. An audible signal

(5) Reset the ELT by placing the cockpit remote switch in the “ARM” position.

SUBTASK 25-62-31-750-013

: DO NOT ALLOW THE DURATION OF THIS TEST TO EXCEED 5 SECONDS.

NOTE

: The aircraft transceiver is not recommended for this test, because it is too sensitive

to verify the integrity of the antenna system and it may pick up a weak signal even if
the antenna is disconnected from the ELT. An AM radio provides a better level of
confidence for this test.

NOTE

: Perform this test within the first five minutes after the hour UTC.

verifies energy is being transmitted by the antenna.

NOTE

: The ELT contains an internal self test function that executes on deactivation of the

ELT. This self test function is designed to test the integrity and radiated power of the
ELT, coax cable, and antenna. If no LED error codes are displayed after deactivation
of the ELT, it is in compliance with FAR Section 91.207 subsection d paragraph (4).

R. Inspection and Test Documentation – Item 8

(1) Make an appropriate entry in the aircraft maintenance records (i.e., logbook), including the

date the ELT inspection and testing was satisfactorily completed.

(2) In addition to the requirements of Step 1, for aircraft operating under Canadian authority and

following satisfactory completion of performance testing, the date on which the test was
performed shall be marked on the ELT external casing in a legible and permanent manner.

Page 42 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

TASK 25-62-31-810-801

3. Fault Isolation

SUBTASK 25-62-31-810-001

A. Self-Test Error Troubleshooting Guidelines

(1) Table 6 describes the ELT self-test LED error codes (i.e., flash codes), their probable causes,

and possible solutions. The 5-flash error is not present when the ELT is programmed with a
serial user protocol (short message).

NOTE

: Upon activation, the LED will display a long single flash, which is normal. Any self-

test error codes will display following this initial flash. If there are multiple errors,
there is a 0.5 to 1.0 second pause between each error code.

Table 6. ELT Self-Test Error Codes Troubleshooting Guide

CODE PROBABLE CAUSE POSSIBLE SOLUTION

3-Flash

Indicates a 406 MHz transmission problem

Open or short condition on antenna

output or coax cable

Antenna or installation faulty

Impedance presented by antenna

Insufficient ground plane

Upright metal structure obstructing

antenna causing re-radiation

Low power output

Verify the coax cable/antenna is

connected and in good condition

Perform continuity check of center

conductor and shield

Check for a shorted cable

Check for intermittent connection in the

coax cable

Check with a VSWR meter. Check antenna

for opens, shorts, or a resistive ground

plane connection

Lengthen or shorten antenna coax cable

length by 4 to 6 inches

Provide ground plane at least 12 inches in

diameter

Stay at least 10-12 inches away from

upright metal structures

Battery low

3A fuse on battery pack circuit board

faulty

ELT local ground not connected

Transmitter module faulty

Verify continuity between antenna ground

plane and ELT local ground connection.

Cannot be repaired in field - Return to

factory for servicing

25-62-31

Page 43 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

CODE PROBABLE CAUSE POSSIBLE SOLUTION

Indicates 406 or 121.5 MHz output power is low

4-Flash

5-Flash

6-Flash

Open or short condition on antenna

output or coax cable

Impedance presented by antenna

Transmitter module faulty

(frequency out of limits)

Indicates there is no navigation position data present (long message protocol only)

ELT programmed with a long message

format.

Indicates G-Switch loop between pins 5 and 12 is not present

Jumper open

Jumper missing

Indicates a battery problem

Check coax cable and connections

Check antenna for proper installation

Lengthen or shorten antenna coax cable

length by 4 to 6 inches

Cannot be repaired in field - Return to

factory for servicing

Reprogram to short message or ignore

error code. 5 flash code does not indicate

a hard failure and does not affect

airworthiness of unit.

Verify D-Sub connector jumper is installed

by checking for less than 1Ω between pins

5 and 12. Repair as necessary.

Install D-Sub jumper between pins 5 and

12 in D-Sub connector.

7-Flash

Operating time is >1 hour

Replace battery pack

Electrical circuits faulty

25-62-31

Page 44 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

SUBTASK 25-62-31-810-002

B. ELT Troubleshooting Guidelines

(1) Table 7 provides ELT troubleshooting guidelines for installation and operational issues.

SYMPTOM PROBABLE CAUSE POSSIBLE SOLUTION

Remote switch LED always on

(steady)

ME406P (453-6611)

Table 7. ELT Troubleshooting Guide

Improper wiring Verify wiring

Short circuit

Remote switch faulty. Replace remote switch.

Check for frayed insulation

Verify LIGHT_ON wire. Check

continuity between pin 2 and pin

9 on remote switch harness

connector with ELT disconnected

from harness. If short to ground

is present, correct wiring short

and reinstall remote switch.

ELT will not turn off

Disconnect remote switch from

harness. Check continuity

between pin 2 and pin 9 on

remote switch harness connector

ELT faulty.

Battery too low to support 406

burst and causes circuit to reset

Turn off ELT using local switch - If ELT turns off:

Defective remote switch harness

reset circuit wiring

Defective remote switch Replace remote switch

If ELT does not turn off using local switch:

ELT defective

with ELT connected to harness.

If short to ground is present with

ELT deactivated, return ELT to

an Artex authorized repair

facility.

Remove battery pack to disable

ELT and replace battery pack

Check wiring continuity and

repair as necessary

Remove battery pack to disable

ELT and return ELT to factory for

servicing

25-62-31

Page 45 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

MOUNTING

TRAY ASSY

ELT MAIN

ASSEMBLY

1

2

3

4

DISCONNECT COAX

DISCONNECT HARNESS

UNDO VELCRO STRAP

(STRAP SHOWN IN

CLOSED POSITION)

NOTE: Coax cable and
wiring harness not
shown for clarity.

MOUNTING

TRAY ASSY

ELT MAIN

ASSEMBLY

1

2

3

4

DISCONNECT COAX

DISCONNECT HARNESS

UNDO METAL STRAP

(STRAP SHOWN IN

CLOSED POSITION)

NOTE: Coax cable and
wiring harness not
shown for clarity.

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-010-801

1. ELT

SUBTASK 25-62-31-010-001

A. ELT Removal

(1) See Figure 12. ELT Removal Sequence.

ME406P (453-6611)

REMOVAL

Figure 12. ELT Removal Sequence

(2) Disconnect the antenna coax cable.

NOTE

: Check the coax cable center conductor pin which is prone to retracting into the

connector housing.

(3) Remove remote switch harness D-sub plug.

(4) Open the velcro strap.

(5) Slide the ELT up and out, and away from the mounting tray.

25-62-31

Page 46 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

SCREW (8 PLCS)

GASKET

ELT ASSEMBLY

BATTERY PACK

DISCONNECT

(ELT flex cable not

shown for clarity)

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-050-801

2. Battery

SUBTASK 25-62-31-050-001

A. Battery Pack Removal

ME406P (453-6611)

CAUTION

: THE BATTERY PACK CONTAINS ELECTROSTATIC DISCHARGE SENSITIVE (ESD)

COMPONENTS AND IT MUST BE HANDLED WITH CARE. IF POSSIBLE, WEAR A
GROUNDED WRIST STRAP WHEN HANDLING THE BATTERY PACK DURING
INSTALLATION ACTIVITIES. TAKE PARTICULAR CARE TO AVOID TOUCHING THE
EXPOSED CIRCUIT BOARD AND CONNECTOR PINS ON THE BOARD.

CAUTION

: THE BATTERY PACK IS CONNECTED TO THE ELT VIA A SHORT INTERCONNECT FLEX

CABLE, WHICH LIMITS THE DISTANCE THE TWO COMPONENTS CAN BE SEPARATED
UNTIL THE FLEX CABLE IS DISCONNECTED.

(1) See Figure 13. Battery Pack Removal.

Figure 13. Battery Pack Removal

(2) Turn the ELT upside down, such that the battery pack is bottom side up (battery cover is

identified with embossed text “BATTERY ACCESS ON THIS SIDE”).

(3) Remove the eight screws from the battery cover.

(4) Lay the ELT on its side, while keeping the ELT and battery pack securely held together.

(5) Separate the battery pack from the ELT, taking care not to put strain on the short flex cable.

(6) Disconnect the flex cable from the small circuit board mounted in the battery pack.

Page 47 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-500-801

3. Material or Equipment Return

SUBTASK 25-62-31-510-001

A. Shipment Information

(1) If any material or equipment is to be returned to the factory, under warranty or otherwise,

ACR Electronics must be notified prior to shipment with the following information:

• Model and serial number of equipment being returned,

• Date purchased,

• Date placed in service,

• Number of hours in service,

• Nature and cause of failure, and

• Remarks, if any.

ME406P (453-6611)

SUBTASK 25-62-31-580-001

B. Return Material Authorization

(1) Upon receipt of such notice, ACR Electronics, Inc. will issue a Return Material Authorization

(RMA) number which then authorizes return of the material or equipment. Contact ACR
Electronics to obtain the RMA number at the address below:

(a) Failure to obtain a RMA number and provide the details listed in SUBTASK 25-62-31-510-

001 on page 48 may cause unnecessary delay and/or rejection of the returned material
or equipment.

(b) All material or equipment returned to the factory must be freight prepaid.

Repair and Overhaul

ACR Electronics, Inc.

5757 Ravenswood Road

Fort Lauderdale, FL 33312, USA

Phone: [phone]

Fax: [phone]

(c) Acceptable methods of shipment for international return are Airborne, Burlington Air,

DHL, Emery, Federal Express, UPS International, and World Wide only.

NOTE

: Do not use “International Commercial Airlines”, such carriers may cause a loss

of returned material or equipment.

25-62-31

Page 48 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

INSTALLATION

TASK 25-62-31-410-801

1. Regulatory Requirements and Guidelines

SUBTASK 25-62-31-990-001

A. TSO C126, Paragraph D

(1) TSO approval of the ELT does not constitute installation approval. All ELT installations are

subject to field approval for a given airframe by either an approved FAA DER or FAA FSDO.
For installations outside the US, contact your local civil aviation regulatory agency for details.

(a) The remote switch is a requirement of TSO C126 and installation is not optional.

(b) The buzzer is a requirement of TSO C126 and installation is not optional.

SUBTASK 25-62-31-990-002

B. FAA

(1) This manual constitutes supporting data, as described in AC43.9-1, Paragraph 6.h.(2) and AC

43-210, Chapter 2, Paragraph 201(a)(6), and as such may be used as support for FAA field
approval of the ELT installation.

(2) In addition to the procedures outlined herein and in accordance with FAR Part 43, the installer

must adhere to the aircraft manufacturer’s instructions and recommendations and the
guidelines provided by FAA Advisory Circular AC 43.13-2 “Acceptable Methods, Techniques,
and Practices - Aircraft Alterations,” specifically Chapters 1 through 3, 11, and 13.

(3) By signing the aircraft logbook, and FAA Form 337, the installer is stating the installation has

been performed in accordance with current FAR requirements and the procedures outlined
herein. The completed Form 337 is provided to the FAA and also becomes a permanent part of
the aircraft maintenance records in accordance with AC43-9, Paragraph 17.

SUBTASK 25-62-31-990-003

C. Canada

(1) All installations must be performed in accordance with Canadian Aviation Regulations (CAR)

Part V, Chapter 551, Paragraph 551.104.

SUBTASK 25-62-31-990-004

D. Other Countries

(1) Installations in aircraft outside of the United States and Canada, must be performed in

accordance with applicable regulatory authority rules and regulations.

25-62-31

Page 49 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

SUBTASK 25-62-31-990-005

E. RTCA

(1) DO-204, § 3.1.8 guidelines for mounting a ELT:

(a) The ELT shall be mounted to primary aircraft load carrying structures, such as trusses,

bulkheads, longerons, spars, or floor beams.

(b) The mounts shall have a maximum static local deflection no greater than 0.1 inches (2.5

mm) when a force of 100 lbs (450 newtons) is applied to the mount in the most flexible
direction. Deflection measurements shall be made with reference to another part of the
aircraft not less than 1 foot (0.3 meters) nor more than 3 feet (1.0 meters) from the
mounting location.

(2) DO-182, § 6.2.2.b recommends that:

(a) To maximize the probability of the ELT transmitting a detectable signal after a crash, all

ELT system components, which must survive a crash intact, e.g. transmitter and
external antenna, should be attached to the airframe in such a manner that the
attachment system can support a 100
100, etc.) applied through the center of gravity of the component (ELT, antenna, etc.) in
the plus and minus directions of the three principal axes of the aircraft.

ME406P (453-6611)

g

load, (ELT weight x 100, ELT antenna weight x

(b) Post-crash critical components of the ELT system, e.g. transmitter and external antenna,

should be mounted as close to each other as possible.

(c) The antenna coax cable should not cross any production breaks, e.g., major structure

sections, such that the ELT and antenna are in the same section of the aircraft and as
close together as possible.

(d) If the ELT and external antenna are on opposite sides of an airframe production break,

the components should be secured to each other by a tether that can support a 100
load (ELT weight x 100). The interconnecting antenna-to-ELT coax cable should have
sufficient slack on both ends that it will not be subjected to any tensile load and should
be tied loosely to the tether.

g

25-62-31

Page 50 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-450-801

2. Mounting Tray

SUBTASK 25-62-31-450-001

A. Location

ME406P (453-6611)

CAUTION

CAUTION

CAUTION

WARNING

: MANY ORIGINAL ELT INSTALLATIONS ARE INADEQUATE AS FAR AS UNIT LOCATION

AND SURFACE RIGIDITY ARE CONCERNED. BECAUSE OF THE CRITICAL FUNCTION AN
ELT PERFORMS, IT IS IMPORTANT THE INSTALLATION FOLLOWS THE INSTRUCTIONS
AND RECOMMENDATIONS HEREIN.

: THE MOUNTING SURFACE MUST BE EXTREMELY RIGID; THEREFORE, MOUNTING AN

ELT DIRECTLY TO THE AIRCRAFT SKIN IS UNACCEPTABLE. MOUNTING THE ELT
DIRECTLY TO THE AIRCRAFT SKIN INDUCES “CRASH HIDING” VIBRATIONS AND
PROVIDES A VERY POOR MOUNTING SURFACE.

: AVOID LOCATING THE ELT WHERE IT WILL BE SUBJECTED TO UNPROTECTED

EXPOSURE TO HARSH CHEMICAL FLUIDS SUCH AS DEICING COMPOUNDS. THESE
TYPES OF CHEMICAL FLUIDS CAN PROMOTE CRACKING AND FRACTURING OF THE
ELT MOUNTING FRAME AND HOUSING COMPONENTS BY DEGRADING THE
STRUCTURAL INTEGRITY OF THESE COMPONENTS. THESE SAME CHEMICAL AGENTS
MAY ALSO CAUSE CORROSION OF ELECTRICAL CONNECTIONS.

: AVOID LOCATING THE ELT IN SUCH A LOCATION WHERE IT MAY BE SUBJECT TO

FLYING OBJECTS OR AIRCRAFT STRUCTURAL PARTS THAT MAY IMPACT THE ELT
DURING AN AIRCRAFT CRASH. MOUNTING AN ELT IN A VULNERABLE AREA CAN
RESULT IN AN IMPACT BEYOND THE ELT’S TSO CRASH RATING OF 100G, CAUSING
DAMAGE AND PREVENTING CORRECT OPERATION DURING A POST-CRASH
ENVIRONMENT.

25-62-31

Page 51 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

3.00 (76)

6.60 (168)

[A] 5.50 (140)

[C] 4.27 (108)

[B] 2.95 (75)

1.83
(46)

[B]

2.00
(51)

[A]

2.55
(65)

[C]

1.84
(47)

3.69
(94)

7.80 (198)

1.54
(39)

2.86
(73)

MOUNTING HOLES CAPABILITY:
[A] ARTEX 110 SERIES, NARCO, & NEW
[B] ARTEX 200 SERIES
[C] POINTER MODEL 3000

Dimensions in inches (mm)

D-SUB

HOUSING

FLIGHT

3.00 (76)

6.60 (168)

[A] 5.50 (140)

[C] 4.27 (108)

[B] 2.95 (75)

1.83
(46)

[B]

2.00
(51)

[A]

2.55
(65)

[C]

1.84
(47)

3.69
(94)

7.80 (198)

1.54
(39)

2.86
(73)

3.77
(96)

MOUNTING HOLES CAPABILITY:
[A] ARTEX 110 SERIES, NARCO, & NEW
[B] ARTEX 200 SERIES
[C] POINTER MODEL 3000

Dimensions in inches (mm)

D-SUB

HOUSING

FLIGHT

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(1) Select a suitable location for the ELT mounting tray. See Figure 14. ME406P ELT Outline and

Dimensions. Refer to these dimensions when determining mounting location.

(2) Mount the ELT as far aft as practical, but where it can be easily retrieved for maintenance.

NOTE

: Statistics show that the tail section of an airplane is likely to be less damaged during

Figure 14. ME406P ELT Outline and Dimensions

a crash; therefore, providing a good mounting environment for the ELT.

(3) Additional installation guidance may be found in AC 43.13-2, Chapter 2, Paragraph 28, which

specifically addresses ELT installations.

25-62-31

Page 52 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

8-32 x 5/8 SCREW

(4 PLCS)

#8 FLAT WASHER

(4 PLCS)

8-32 x 5/8 SCREW

(4 PLCS)

#8 FLAT WASHER

(4 PLCS)

NOTE: LOCKWASHER OR

LOCKNUT RECOMMENDED

8-32 X 1/4 HEX NUT

(4 PLCS)

NOTE: LOCKWASHER OR

LOCKNUT RECOMMENDED

8-32 X 1/4 HEX NUT

(4 PLCS)

AIRFRAME

STRUCTURE (REF.)

EQUIPMENT MOUNTING

PLATE (REF.)

MOUNTING

TRAY

MOUNTING

TRAY

AIRFRAME

STRUCTURE (REF.)

EQUIPMENT MOUNTING

PLATE (REF.)

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

SUBTASK 25-62-31-450-002

B. Installation

(1) See Figure 15. Typical Mounting Tray Installation.

ME406P (453-6611)

Figure 15. Typical Mounting Tray Installation

(2) Install the necessary mounting structure as appropriate for the specific installation.

(3) Align the mounting tray (452-3034) on the mounting structure, such that the arrow on the

tray is within 10° of the longitudinal axis of the aircraft and pointing in the direction of flight.

NOTE

: Refer to TASK 25-62-31-410-803 on page 74 for guidelines on ELT orientation in a

helicopter.

(4) Mark the four holes needed for mounting the tray, using the tray as a pattern. The hole

pattern is also illustrated in Figure 14. ME406P ELT Outline and Dimensions on page 52.

(5) Drill the four mounting holes with a #19 or 4.25 mm drill.

(6) Install the mounting tray with the hardware provided in the installation kit (455-7421), as

shown in Figure 15. Typical Mounting Tray Installation.

NOTE

: The use of substitute mounting hardware is acceptable provided the hardware used

meets or exceeds the strength and corrosion resistance of the original hardware.

(a) Torque to 12 ±1 lb-in (136 ± 11 N•cm).

25-62-31

Page 53 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-450-802

3. Antenna

SUBTASK 25-62-31-990-001

A. Selection

(1) Use only antennas approved for use with the ME406P ELT. The ELT will not work properly

without being connected to an antenna for which it was designed.

(2) Verify the antenna selected matches the requirements of the specific installation.

Considerations include aircraft maximum rated speed, location restrictions, and any other
considerations specific to the installation.

(3) Per FAA TSO C126 and ETSO C126, ELTs must be installed with only the components that

have been certified by either the manufacturer of the unit or via a Type Certificate
authorization done by the airframe manufacturer. Contact Artex Technical Support for further
information regarding component and accessory selection.

ME406P (453-6611)

SUBTASK 25-62-31-450-001

B. Location

(1) Select a suitable location for the antenna.

(a) Place the antenna in a location where the antenna can be installed within 15° of vertical

and with at least 30 inches (762 mm) of clearance from other antennas, particularly
VHF, in accordance with RTCA/DO-204, § 3.1.10.2.

NOTE

: AC 43.13-2, Chapter 3 recommends a minimum distance of 36 inches (914

(b) Additional location guidance may be found in AC 43.13-2, Chapter 3, which deals

specifically with antenna installations.

SUBTASK 25-62-31-450-002

C. Installation

NOTE

: Per FAA TSO C126a, “Those installing this article, on or in a specific type or class of aircraft,

must determine that the aircraft installation conditions are within the TSO standards. TSO
articles must have separate approval for installation in an aircraft.”

CAUTION

:Artex cannot verify appropriate antenna selection per each airframe. Many considerations must
be evaluated during the antenna selection process, such as dynamic/static loading. Certain
special considerations need to be accounted for, such as airflow speed over the antenna surfaces
(Frontload/Sideload). Consult FAA AC 43.13-2 and airframe manufacturer for antenna
installation practices and requirements. For more information call Artex Technical Support.

mm) clearance between antennas.

WARNING

:Per FAA AC 43.13-2: “Painting an antenna or applying protective coatings or devices that are
not approved are not allowed [under this AC]. Paint is an RF de-tuner. If an antenna is painted in
the field, paint type and paint thickness present uncontrolled variables that will affect an
antenna’s performance and may result in the antenna no longer meeting its specifications or
Technical Standard Order (TSO).” Artex does not authorize operators or outside

25-62-31

Page 54 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

maintenance organizations to perform field repairs or painting. Contact Artex Technical
Support for more information.

(1) Install a doubler plate if necessary to meet rigidity requirements. A 20 lb (9.1 kg) force applied

to the antenna in all directions should not cause an appreciable distortion in the aircraft skin.

(2) Install a ground plane if necessary. In certain applications, particularly those where antennas

are installed on composite, fabric, or wood airframes, a ground plane is required.

(3) Drill the antenna mounting holes and coax connector holes referring to the appropriate

antenna illustration for hole patterns and hole sizes.

(a) See Figure 16. Rod 110-338, Whip 110-773, and Portable 110-775 Antenna Outlines and

Dimensions on page 56.

(4) Mount the antenna referring to the appropriate antenna illustration for hardware

requirements, torque, and other applicable installation requirements.

(5) A coax cable, 6 feet (1.8 m) long, is provided as part of the ELT kit.

25-62-31

Page 55 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

15.0 (381) MAX.

1.13 (29) MAX.

RUBBER WASHER

LOCKWASHER

HEX NUT, 1/2-28

RF CONNECTOR BNC FEMALE

110-773

INSTALLATION NOTES:

1. PREPARE ANTENNA MOUNTING SURFACE TO ENSURE GROUND CONTACT OF LESS THAN 0.003 OHM.

2. PROVIDE 0.563 (9/16”) (14.5 MM) Ø HOLE IN AIRCRAFT SKIN. USE A DOUBLER AS NECESSARY.

3. ENSURE RUBBER WASHER IS PROPERLY SEATED IN THE GROOVE UNDER THE BASE OF THE ANTENNA.

4. INSTALL ANTENNA AND RUBBER WASHER IN MOUNTING HOLE AND ATTACH WITH LOCKWASHER AND HEX NUT.

72548(72/%,11FP

5. APPLY A SMALL, SMOOTH FILLET OF RTV SEALANT AROUND PERIPHERY OF ANTENNA BASE TO SEAL OUT MOISTURE.

13.00
(330)

3.5

(89)

3.3

(84)

15.50 MAX
(394)

2.70 MAX
(69)

1.625 (41.3)

0.812 (20.6)

0.750 (19.1)

0.90 (23)

1.750 (44.5)

4.40 MAX
(112)

RF CONNECTOR
BNC FEMALE

4 - 100° CSK HOLES
Ø 0.170 (4.3)

110-338

'LPHQVLRQVLQLQFKHVPP

C.G.

INSTALLATION NOTES:

1. MOUNT ANTENNA USING #8-32 SS 100° C’SK
MACHINE SCREWS AND ASSOCIATED
HARDWARE.

72548(72/%,11FP

2. PROVIDE 0.625 (5/8”) (16 MM) Ø HOLE
IN AIRCRAFT FOR BNC CONNECTOR.

3. PROVIDE 0.182 (4.6 MM) Ø HOLES (4 PLCS)
IN AIRCRAFT FOR ATTACHING SCREWS.

4. APPLY A LAYER OF ANTI-CORROSION BONDING
GREASE BETWEEN AICRAFT AND ANTENNA BASE.

5. GASKET NOT SUPPLIED AND USE OPTIONAL.
REQUEST P/N 280-0320 IF ONE IS DESIRED.

GASKET (OPTIONAL)

'LPHQVLRQVLQLQFKHVPP

16.5 (419)

0.85 (22)

RF BNC CONNECTOR

INSTALLATION NOTES:

1. MOUNT DIRECTLY TO ELT ANTENNA BNC CONNECTOR.

2. NOT DESIGNED FOR MOUNTING ON AIRFRAME.

3. IN STOWED POSITION, ANTENNA TAPE PORTION IS FOLDED OVER AND SECURED TO THE BASE PORTION VIA VELCRO STRIP.

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

Figure 16. Rod 110-338, Whip 110-773, and Portable 110-775 Antenna Outlines and Dimensions

25-62-31

Page 56 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

1.10
(28)

0.044
(1.1)

0.140
(3.6)

1.59
(40)

OUTLINE OF REMOTE
SWITCH BODY

0.1405 (3.57) Ø
USE #28 (3.6) DRILL
(4 PLCS)

NOTE: HATCHED AREA
IS CUTOUT PATTERN

1.04
(26)

1.73
(44)

1.30
(33)

2.00
(51)

1.20
(30)

0.50
(13)

1.70
(43)

1.06
(27)

1.45
(37)

FRONT VIEW

SIDE VIEW

HOLE CUTOUT GUIDE FOR INSTALLATION

OF 345-6196-04 (FRONT VIEW)

RECOMMENDED

CUTOUT PATTERN

DIMENSIONS IN INCHES (MM)

ARTEX

ON

ARM

Press ON

Wait 1 Second

Press ARM

EMERGENCY USE ONLY

Test/Reset

ELT

TOLERANCE: ±0.03 (1)

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-450-803

4. Remote Switch

SUBTASK 25-62-31-450-001

A. Location

NOTE

: This procedure is applicable to the most commonly used remote switch (345-6196-04). If an

optional switch is installed in lieu of this one, the applicable installation instructions should be
consulted.

(1) Select a suitable location for the remote switch assembly.

(2) The switch assembly must be mounted in the cockpit where the pilot can easily reach the

switch and see the LED.

(3) The switch assembly requires a space approximately 2.0 x 1.3 in. (51 x 33 mm) on the panel

surface and behind the panel. See Figure 17. Remote Switch Outline and Dimensions.

ME406P (453-6611)

Figure 17. Remote Switch Outline and Dimensions

SUBTASK 25-62-31-450-002

B. Installation

(1) Mark the cutout on the cockpit panel. See Figure 17. Remote Switch Outline and Dimensions.

(2) Fit the switch assembly into the cutout and mark the four screw holes, then remove the

switch.

(3) Drill the screw holes with a #28 or 3.6 mm drill.

(4) Install the switch assembly using the hardware provided in the remote switch installation kit

(455-6196).

NOTE

: Step 4 may be accomplished after wiring is completed and the harness plug has been

plugged into the switch assembly in accordance with the requirements of SUBTASK
25-62-31-450-010 on page 67. If such is the case, perform a fit check at this time.

(5) Apply the “For Aviation Emergency Use Only/Unauthorized Use Prohibited” placard (591-

0428), provided in the installation kit, as close to the switch as practical.

25-62-31

Page 57 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

1.56 (40)

1.32 (34)

Ø 1.10 (28)

2X Ø 0.12 (3)

0.70
(18)

1.00
(25)

0.16 (4)

452-6505

Dimensions in inches (mm)

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-450-804

5. Buzzer

SUBTASK 25-62-31-450-001

A. Location

ME406P (453-6611)

CAUTION

: PLACING THE BUZZER IN THE COCKPIT IS NOT RECOMMENDED DUE TO THE

POTENTIAL FOR DISTRACTION. THE BUZZER PRODUCES A LOUD, SIREN-TYPE
SOUND WHEN THE ELT IS ACTIVATED. SINCE THE BUZZER OPERATES IN TANDEM
WITH THE COCKPIT LED, IT WOULD ONLY SERVE AS A REDUNDANT WARNING
INDICATOR IN THE COCKPIT.

(1) Select a suitable location for the buzzer.

NOTE

: The buzzer may be located anywhere in the aircraft; however, the recommended

location is near the ELT, as the buzzer is loud enough to be heard outside the aircraft
when the engine(s) is not running. When the engine(s) is running, the LED on the
cockpit remote switch assembly will warn the pilot the ELT is active.

SUBTASK 25-62-31-450-002

B. Installation

(1) Fabricate a bracket suitable for supporting the buzzer. See Figure 18. Buzzer Outline and

Dimensions.

NOTE

: Refer to the aircraft manufacturer’s written instructions or AC 43.13-2, as applicable,

for approved bracket fabrication and installation methods.

Figure 18. Buzzer Outline and Dimensions

(2) Attach the bracket to the airframe such that the buzzer is adequately supported and does not

show any significant evidence of distorting the airframe skin.

(3) Install the buzzer in the bracket.

(a) Remove the panel mounting nut and insert the buzzer in the bracket.

NOTE

: Alternatively, the buzzer may be attached to the support using the mounting

(b) Install the panel mounting nut and tighten it securely.

holes on the buzzer body and appropriate hardware.

Page 58 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

TASK 25-62-31-450-805

6. Wiring

SUBTASK 25-62-31-990-001

A. General Considerations and Recommendations

CAUTION

CAUTION

CAUTION

(1) The following wiring and grounding considerations and recommendations are applicable:

: IF GROUND OR OTHER CONNECTIONS ARE BROKEN OR OTHERWISE DAMAGED, THE

ELT IS STILL CAPABLE OF AUTOMATIC ACTIVATION; HOWEVER, THE COCKPIT
REMOTE SWITCH MAY BE INCAPABLE OF RESETTING THE ELT AND OPERATION MAY
NOT BE INDICATED ON THE REMOTE SWITCH LED.

: INCORRECT TERMINATION OF THE WIRING IN THE CONNECTORS MAY DAMAGE THE

ELT, CAUSE TRANSMISSION ISSUES, OR RESULT IN A NON-FUNCTIONING REMOTE
SWITCH. VERIFY THE WIRING AGAINST THE WIRING DIAGRAM AND PERFORM A
CONTINUITY CHECK TO CONFIRM GOOD CONNECTIONS AND PROPER PIN
LOCATIONS.

: TO PREVENT INADVERTENT ELT ACTIVATION OR POSSIBLE COMPONENT DAMAGE,

DO NOT CONNECT THE HARNESS TO THE ELT OR COCKPIT REMOTE SWITCH UNTIL
ALL POWER AND GROUND WIRING CONNECTIONS ARE COMPLETED.

(a) Minimum 22 AWG wire size.

(b) Shielding is recommended to help prevent EMI and RF interference.

(c) Use high quality conductor meeting MIL-W-16878, M22759, M27500, or a commercial

equivalent acceptable for use in aircraft applications.

(d) Provide a “Drip Loop” in the remote switch harness connection to the ELT to divert

moisture from the connector. See TASK 25-62-31-990-805 on page 17 for a definition.

(e) Provide a “Service Loop” in the remote switch harness connection to the remote switch

assembly, such that the assembly can be withdrawn from the panel far enough to easily
disconnect the harness plug. See TASK 25-62-31-990-805 on page 17 for a definition.

(f) ELT and remote switch grounds must be common to aircraft ground and should be less

than 10Ω.

(2) See Figure 19. Metal Airframe Wiring Diagrams on page 60 and Figure 20. Composite Airframe

Wiring Diagrams on page 61. Choose the appropriate wiring diagram, depending upon the
following factors:

(a) Metal or composite airframe, and

(b) A shielded or unshielded remote switch harness cable is chosen for the installation.

25-62-31

Page 59 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

ELT D-SUB

PLUG

CABLE

SHIELD

REMOTE SWITCH

MOLEX PLUG

SHIELD USED AS GROUND WIRE

LIGHT

RESET 1

RESET 2

EXTERNAL ON

G-SWITCH LOOP

G-SWITCH LOOP

GROUND

AUDIO POWER

2

6

13

14

5

12

7

8

8

5

2

7

1

3

6

9

+14V

OR

+28v

UNSWITCHED
POWER

1/2A SLO-BLO FUSE

NOTE:

PINS 6 & 9 OF REMOTE
SWITCH ARE INTERNALLY
TIED WITHIN THE REMOTE
SWITCH ASSEMBLY.

NOTE:

N/C PINS 1, 3, 4,
9, 10, 11, 15.

RED +

BLK –

AUDIO

INDICATOR

452-6505

METAL AIRFRAME WITH SHIELDED CABLE

ELT D-SUB

PLUG

REMOTE SWITCH

MOLEX PLUG

LIGHT

RESET 1

RESET 2

EXTERNAL ON

G-SWITCH LOOP

G-SWITCH LOOP

GROUND

AUDIO POWER

2

6

13

14

5

12

7

8

8

5

2

7

1

3

6

9

+14V

OR

+28v

UNSWITCHED
POWER

1/2A SLO-BLO FUSE

NOTE:

PINS 6 & 9 OF REMOTE
SWITCH ARE INTERNALLY
TIED WITHIN THE REMOTE
SWITCH ASSEMBLY.

NOTE:

N/C PINS 1, 3, 4,
9, 10, 11, 15.

RED +

BLK –

AUDIO

INDICATOR

452-6505

METAL AIRFRAME WITH UNSHIELDED CABLE

AIRFRAME

GROUND (TYP.)

AIRFRAME

GROUND (TYP.)

PIN INSERTION END OF MOLEX
PLUG FOR REMOTE SWITCH
ASSEMBLY. HOLE NUMBERING
IS IDENTICAL TO THAT INSCRIBED
ON ACTUAL PLUG. ORIENTATION
SHOWN IS SAME AS INSERTION
ORIENTATION FOR INSTALLED
SWITCH.

9

8

7

6

5

4

3

2

1

SOLDER CUP (BACK) SIDE OF D-SUB PLUG
FOR ELT. HOLE NUMBERING IS IDENTICAL
TO THAT INSCRIBED ON ACTUAL PLUG.

1

9

8

15

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

Figure 19. Metal Airframe Wiring Diagrams

25-62-31

Page 60 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

LIGHT

RESET 1

RESET 2

EXTERNAL ON

G-SWITCH LOOP

G-SWITCH LOOP

GROUND

AUDIO POWER

NOTE:

N/C PINS 1, 3, 4,
9, 10, 11, 15.

LIGHT

RESET 1

RESET 2

EXTERNAL ON

G-SWITCH LOOP

G-SWITCH LOOP

GROUND

AUDIO POWER

NOTE:

N/C PINS 1, 3, 4,
9, 10, 11, 15.

ELT D-SUB

PLUG

2

6

13

14

5

12

7

8

RED +

INDICATOR

452-6505

ELT D-SUB

PLUG

2

6

13

14

5

12

7

8

RED +

AUDIO

CABLE

SHIELD

SHIELD USED AS GROUND WIRE

BLK –

COMPOSITE AIRFRAME WITH SHIELDED CABLE

BLK –

REMOTE SWITCH

MOLEX PLUG

8

5

2

7

1

3

6

NOTE:

9

REMOTE SWITCH

MOLEX PLUG

8

5

2

7

1

3

6

9

1/2A SLO-BLO FUSE

PINS 6 & 9 OF REMOTE
SWITCH ARE INTERNALLY
TIED WITHIN THE REMOTE
SWITCH ASSEMBLY.

1/2A SLO-BLO FUSE

NOTE:

PINS 6 & 9 OF REMOTE
SWITCH ARE INTERNALLY
TIED WITHIN THE REMOTE
SWITCH ASSEMBLY.

UNSWITCHED

POWER

+14V

OR

+28v

UNSWITCHED

POWER

+14V

OR

+28v

AUDIO

INDICATOR

452-6505

COMPOSITE AIRFRAME WITH UNSHIELDED CABLE

1

9

SOLDER CUP (BACK) SIDE OF D-SUB PLUG
FOR ELT. HOLE NUMBERING IS IDENTICAL
TO THAT INSCRIBED ON ACTUAL PLUG.

8

15

Figure 20. Composite Airframe Wiring Diagrams

3

6

9

PIN INSERTION END OF MOLEX
PLUG FOR REMOTE SWITCH
ASSEMBLY. HOLE NUMBERING
IS IDENTICAL TO THAT INSCRIBED
ON ACTUAL PLUG. ORIENTATION
SHOWN IS SAME AS INSERTION
ORIENTATION FOR INSTALLED
SWITCH.

2

1

5

4

7

8

25-62-31

Page 61 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

PIN 1

PIN 7

PIN 9

PIN 3

151-5009

USE FEMALE

CRIMP PINS

(151-6628)

REMOTE SWITCH (REF.)

REMOTE SWITCH

HARNESS

PIN 1

PIN 9

PIN 8

PIN 15

150-1130

ME406 ELT (REF.)

NOTE: D-SUB HOUSING
NOT SHOWN FOR CLARITY

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

SUBTASK 25-62-31-450-001

B. Remote Switch Harness Fabrication

(1) See Figure 21. Remote Switch Harness Arrangement.

ME406P (453-6611)

(2) Fabricate a harness long enough to reach from the ELT to the cockpit remote switch, allowing

(3) Fabricate ground wires as required, based on the wiring diagram appropriate for the

(4) Fabricate a power wire long enough to reach from the remote switch plug (Pin 1 or Pin 3) to

(5) Prepare the wires fabricated in Steps (3) and (4), as described in Steps (2)(a) and (2)(b).

(6) Fabricate two wires, one of sufficient length to reach from the ELT D-Sub connector plug to

Figure 21. Remote Switch Harness Arrangement

enough slack to provide a drip loop at the ELT end and a service loop at the cockpit remote
switch end. Refer to the appropriate wiring diagram.

(a) Strip approximately 0.15 in. (3 mm) of insulation from the remote switch end of each of

the harness cable wires.

(b) Dress and tin the bare wires to prevent the strands from fraying during terminal

crimping operations.

installation.

the selected aircraft power source.

the buzzer and the other from the buzzer to ground.

NOTE

: These wires provide power and ground for the buzzer. Use appropriate means of

identification for the wires, such that the wires can be readily identified.

Page 62 of 85

JUN 25/13

25-62-31

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(7) Prepare the wires fabricated in Step (6), as described in Steps (2)(a) and (2)(b).

(8) Crimp appropriately sized ring terminals on the buzzer ends of the buzzer power and ground

wires.

(9) Crimp an appropriately sized ring terminals on the airframe end of the ground wires.

(10) Crimp an appropriately sized ring terminal on the remote switch power source wire end.

NOTE

: If desired, the power wire may be spliced to an unswitched power source in a

manner acceptable to the aircraft manufacturer, or as described in AC 43.13-1,
Paragraph 11-167.

(11) Crimp female terminal pins (151-6628) to the cockpit remote switch end, as follows:

NOTE

: Use Molex crimp tool 63811-3300, or an equivalent tool for 0.062 in. terminal pins.

(a) Each harness wire.

(b) Remote switch ground wire.

(c) Remote switch power wire.

(12) Bundle the wiring into a complete harness, with breakouts as appropriate, such that the wiring

can be properly supported and attached to the airframe. Refer to the aircraft manufacturer’s
written instructions or AC 43.13-1, Chapter 11, § 9 through 12, as applicable.

SUBTASK 25-62-31-450-002

C. ELT D-Sub Plug Installation

NOTE

: Artex supplies a DB15 female soler contact connector with all ME406 ELT kits. If a crimp contact

connector is preferred, it is acceptable to purchase and use an alternate DB15 crimp contact
connector. Ensure it conforms to MIL-C-24308 or other commercial specification to ensure
performance requirements are met.

NOTE

: If moisture intrusion is a possibility, seal the back side of the connector. See SUBTASK 25-62-31-

450-001 on page 62.

(1) Select a rubber grommet, supplied as part of the D-Sub housing kit (150-1127), that fits

snugly around the harness wiring.

(2) Feed the wiring harness, ground wire, and buzzer power wire through the rubber grommet,

such that the raised collar end of the grommet fits inside the housing. See Figure 22. D-Sub
Plug Assembly on page 65.

NOTE

: For composite airframe installations, the buzzer ground wire should also be routed

through the grommet.

25-62-31

Page 63 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(3) Slide the grommet away from the cable and other conductor ends, such that it does not

interfere with soldering the conductors to the plug (150-1130).

(4) Solder the buzzer ground conductor to the cable shield or ground conductor for composite

airframe installations. See Figure 20. Composite Airframe Wiring Diagrams on page 61.

(5) Fabricate a short jumper wire, approximately 1.5 in. (38 mm) long.

CAUTION

(a) Strip approximately 0.15 in. (3 mm) of insulation from both ends of each of the wire.

(b) Dress and tin the bare wire ends to prevent the strands from fraying during terminal

(c) Solder the jumper wire to D-Sub pins 5 and 12.

(6) Solder the wiring to the D-Sub plug as follows, referring to the wiring diagram appropriate for

the installation:

(a) Harness wires,

(b) Buzzer power wire, and

(c) Ground wire.

(7) Fit the plug into a housing half positioning the grommet such that it fits into the recess on the

cable end of the housing, with the raised collar step against the housing inside face.

(8) Install the bracket washers onto the thumbscrews.

(9) Insert thumbscrews into lower housing half.

: THE ELT WILL NOT AUTOMATICALLY ACTIVATE IF THE JUMPER (G-SWITCH

LOOP) IS NOT PROPERLY INSTALLED IN THE ELT D-SUB CONNECTOR.

crimping operations.

NOTE

: Make note of the wiring identification and pin location relationships, such that

the wiring at the remote switch end can be terminated correctly.

(10) Fit the other housing half into place.

(11) Screw housing halves together using the screws and nuts supplied as part of the housing kit.

25-62-31

Page 64 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

GROMMET

(RAISED COLLAR END)

4 OR 5-CONDUCTOR CABLE
(HORN CONDUCTOR NOT
SHOWN)

THUMBSCREW (TYP.)

BRACKET WASHER (TYP.)

HOUSING HALF (TYP.)

HARDWARE (TYP.)

15-PIN

D-SUB PLUG

NOTE: STRAIN RELIEF
CLAMP NOT SHOWN

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(12) Install the strain relief clamp.

SUBTASK 25-62-31-450-003

D. Cockpit Remote Switch 9-Pin Plug Installation

NOTE

: If moisture intrusion is a possibility, apply a thin bead of RTV over rear of the MOLEX connector

to prevent corrosion buildup. Use Dow Corning RTV-3145 or equivalent.Insert the wiring pins in
the Molex 9-pin cockpit remote switch plug (151-5009), referring to the wiring diagram
appropriate for the installation, as follows:

(a) Insert each harness female pin into the plug, referring to the wire identification and pin

(b) Insert the remote switch power wire female pin into Pin 1 or Pin 3 of the plug, as

(c) Insert the remote switch ground wire into Pin 9 of the plug.

SUBTASK 25-62-31-450-004

E. Wiring Installation

(1) Route the remote switch harness wire bundle and breakout wiring through the airframe.

(2) Route the antenna coax cable through the airframe.

Figure 22. D-Sub Plug Assembly

relationships recorded in Step C.(5)(a).

NOTE

: Terminal pins may be removed from the plug using Molex extraction tool

11030002, or equivalent.

appropriate for the selected 14V or 28V power source.

25-62-31

Page 65 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

: A longer coax cable, up to 20 feet (6.1 m), may be fabricated if the cable provided is

NOTE

too short. Use RG-142 or RG-400 coax cable.

(3) Support the wiring and coax cable by clamping or other suitable means, such that the wiring

and cables are properly supported and protected from chaffing and strain. Refer to the aircraft
manufacturer’s written instructions or as described in AC 43.13-1, Chapter 11, § 9 through 12,
as applicable.

SUBTASK 25-62-31-450-005

F. Antenna Connection

(1) Connect the coax cable to the antenna, making sure the cable is routed and supported such

that there is no tensile load (i.e., strain) on the connection.

SUBTASK 25-62-31-450-006

G. Cockpit Remote Switch Power Connection

(1) Connect the remote switch power wire. If the wire is spliced, fabricate the splice in a manner

acceptable to the aircraft manufacturer or as described in AC 43.13-1, § 13.

NOTE

: The power source provides energy for the remote switch assembly LED, but has no

effect on switch functions, as the switch will control the ELT with or without power.

NOTE

: Power should be connected directly to the battery using a 1/2 A in-line, slo-blo fuse

or circuit breaker; or an alternate un-switched source, such as the aircraft clock
circuitry.

SUBTASK 25-62-31-450-007

H. Remote Switch Alternate Power Source

(1) If the aircraft does not have an electrical system (i.e., no battery), it is permissible to fabricate

a substitute power source for the LED, as follows:

(a) Connect three suitably supported 9V alkaline batteries together in series.

(b) Connect the positive (+) side to Pin 3 of the remote switch connector.

(c) Connect the negative (–) side to aircraft ground, such that the circuit is complete.

(d) Check the battery voltage periodically and replace the batteries every two years.

(e) Note the alteration in the aircraft logbook.

SUBTASK 25-62-31-450-008

I. Airframe Ground Connections

(1) Connect the ground wires to the airframe in accordance with the aircraft manufacturer’s

written instructions or as described in AC 43.13-1, Chapter 11, § 15, as applicable. See Figure

19. Metal Airframe Wiring Diagrams on page 60 and Figure 20. Composite Airframe Wiring
Diagrams on page 61 as appropriate.

25-62-31

Page 66 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

SUBTASK 25-62-31-450-009

J. Buzzer Connections

(1) Connect the power wire to the buzzer positive (+) terminal.

(2) Connect the ground wire to the buzzer negative (–) terminal.

SUBTASK 25-62-31-450-010

K. Remote Switch Final Installation

(1) Insert the harness plug into the remote switch receptacle.

(2) Install the remote switch assembly in accordance with SUBTASK 25-62-31-450-002 on

page 57.

ME406P (453-6611)

25-62-31

Page 67 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

MOUNTING
TRAY ASSY

ELT MAIN

ASSEMBLY

4

3

2

1

CONNECT COAX

CONNECT HARNESS

CLOSE VELCRO STRAP

(STRAP SHOWN IN

CLOSED POSITION)

NOTE: Coax cable and
wiring harness not
shown for clarity.

MOUNTING
TRAY ASSY

ELT MAIN
ASSEMBLY

4

3

2

1

CONNECT COAX

CONNECT HARNESS

CLOSE METAL STRAP

(STRAP SHOWN IN

CLOSED POSITION)

NOTE: Coax cable and
wiring harness not
shown for clarity.

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-410-802

7. ELT Installation

SUBTASK 25-62-31-410-001

A. Installation and Test

ME406P (453-6611)

CAUTION

: TAKE CARE TO KEEP THE REMOTE SWITCH PLUG STRAIGHT WHEN CONNECTING IT

TO THE ELT. IF THE PLUG IS COCKED (I.E., CROOKED) WHEN INSERTING IT INTO
THE ELT RECEPTACLE, THE ELT MAY ACTIVATE. IF THE ELT ACTIVATES, RESET IT BY
CYCLING THE LOCAL CONTROL SWITCH TO “ON” AND THEN BACK TO “ARM”.

(1) See Figure 23. ELT Installation Sequence.

Figure 23. ELT Installation Sequence

(2) Verify the ELT local switch is in the “ARM” position.

(3) Insert the ELT into the mounting tray at an angle, such that the locking ears at the end

opposite the direction-of-flight arrow fit into the mounting tray locking slots.

(4) Press the ELT down until it is fully seated in the mounting tray.

25-62-31

Page 68 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

A

LOOSE END
OF STRAP

DETAIL A

CROWN AREA OF
CASE RADIUS

STRAP STITCHING
ALIGNED WITH
RADIUS OF CASE.

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

Figure 24. Velcro Strap Installation & Inspection

(5) Tighten the Velcro strap around the ELT body.

(a) Tighten the Velcro strap firmly around the ELT body. Pull loose end of strap with enough

force so that the stitched seam is aligned with the crown of the radius of the ELT case
(see Detail A). Press and smooth “hook” end of strap firmly into “loop” portion to ensure
a tight bond.

(b) Conduct an inspection of the Velcro strap per FAR Part 43, Appendix D. Check strap for

proper position and tightness. Check strap for debris that may inhibit the strap from
being fully engaged. Also check for cuts, abrasion, or any other damage to the strap.
Replace mounting tray assembly if any parts are damaged or worn.

(c) Repeat steps (a) and (b) each time the ELT is removed and re-installed in the mounting

tray.

(6) Connect the remote switch harness plug to the ELT, as follows:

(a) Press two sealant strips (850-0814) against the male pins of the ELT receptacle with the

tacky side against the pins, while peeling the foam backing off each sealant strip.

NOTE

: Verify sealant strips match the receptacle shape.

NOTE

: Verify the sealant strips are in place on existing installations.

(b) Plug the remote switch harness plug into the ELT receptacle.

(c) Screw the thumbscrews into the ELT receptacle retaining nuts until the plug is seated

properly.

25-62-31

Page 69 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

(7) Connect the antenna coax cable to the ELT.

(8) Tie up excess slack in the harness and coax cable, such that they form drip loops.

NOTE

: Steps (1) through (7) are applicable any time the ELT has been removed and

undergoes reinstallation. Step (8) is only applicable at initial installation or if the
wiring or coax cable has been disturbed.

(9) Test the ELT installation in accordance with the requirements of SUBTASK 25-62-31-750-011

on page 41.

NOTE

: It is very important the cockpit remote switch LED immediately begins flashing

continuously upon ELT activation. If the LED fails to start flashing, recheck the
interface wiring and connections between the ELT and the cockpit remote switch.

NOTE

: If verification of the digital message (i.e., 406 MHz burst) is desired, follow the

procedures outlined in SUBTASK 25-62-31-750-009 on page 40.

SUBTASK 25-62-31-450-001

B. Harness ELT D-Sub Plug Sealing

ME406P (453-6611)

(1) Seal the D-Sub plug at the ELT end to prevent moisture from penetrating the connection, thus

preventing water from beading up and causing bridging between connector pins resulting in
possible activation of the ELT. Use the following procedure:

NOTE

: Perform the sealing process once all tests have been satisfactorily completed and all

harness connections have been verified to be correct.

(a) Disconnect the remote switch harness D-Sub plug from the ELT.

(b) Separate the D-Sub housing halves.

(c) Inject Dow Corning® 4 Electrical Insulating Compound or an equivalent meeting MIL-S-

8660C into the back side of the plug, such that the insulating compound surrounds the
D-Sub pin area and covers the back of the plug.

(d) Reinstall the housing halves.

(e) Inject Dow Corning® 4 Electrical Insulating Compound or an equivalent meeting MIL-S-

8660C around the male pins of the ELT receptacle.

(f) Connect the remote switch harness plug to the ELT.

SUBTASK 25-62-31-410-002

C. Installation Documentation

(1) Make appropriate logbook (i.e., aircraft records) entries and submit FAA Form 337, along with

any supporting data required by the FAA for approval of the installation, as applicable.

NOTE

: Refer to TASK 25-62-31-450-801 on page 51 for additional information on installation

approvals.

(2) In countries other than the United States, make appropriate aircraft records entries and

submit documentation as required for installation approval in accordance with national
regulatory authorities.

25-62-31

Page 70 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

SCREW P/N 201-0402

(8 PLCS)

GASKET

ELT ASSEMBLY

BATTERY PACK

CONNECT

(ELT flex cable not

shown for clarity)

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-450-806

8. Battery Pack Installation

SUBTASK 25-62-31-450-001

A. Battery Reinstallation

ME406P (453-6611)

CAUTION

: THE BATTERY PACK CONTAINS ELECTROSTATIC DISCHARGE SENSITIVE (ESD)

COMPONENTS AND IT MUST BE HANDLED WITH CARE. IF POSSIBLE, WEAR A
GROUNDED WRIST STRAP WHEN HANDLING THE BATTERY PACK DURING
INSTALLATION ACTIVITIES. TAKE PARTICULAR CARE TO AVOID TOUCHING THE
EXPOSED CIRCUIT BOARD AND CONNECTOR PINS ON THE BOARD.

(1) This subtask applies to reinstallation of an existing battery that was removed for inspection

and testing.

(2) See Figure 24. Velcro Strap Installation & Inspection.

Figure 25. Battery Pack Installation

(3) Verify the gasket is in place and in good condition.

(4) Lay the battery pack on the work surface with the cells facing up.

(5) Align the ELT with the battery pack, holding it slightly above the pack with one hand.

(6) Connect the ELT flex cable receptacle to the plug on the battery pack circuit board using the

other hand, taking care not to put a twist in the flex cable.

NOTE

: The receptacle should “click” into place when properly mated to the plug.

Page 71 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(7) Reset the ELT by toggling the ELT local control switch to “ON” and back to “ARM” after 1-2

seconds, if the ELT activates.

NOTE

: This step may be necessary because the ELT will occasionally activate when power is

connected to it in Step 6.

(8) Fit the battery pack into place on the ELT, making sure the gasket is positioned correctly.

(9) Turn the battery pack bottom face up to facilitate installing the screws, while securely holding

the ELT and battery pack together.

(10) Install the eight battery pack retaining screws and tighten until the ELT is snug against the

gasket.

(11) Torque the screws to 10-12 lb-in (113-136 N•cm).

(12) Perform an ELT self-test as follows:

(a) Set the ELT local control switch in the “ON” position. The LED will begin flashing every 3-

4 seconds.

(b) Return the switch to the “ARM” position after 1-2 seconds. If the ELT is working

properly, the LED will stay on for approximately 1 second. The ELT may flash the
following expected error codes, which should be ignored.

1

3-flash and 4-flash errors, which are generated because the ELT is not installed
and connected to an antenna, etc.

A 5-flash error will be indicated if the ELT is programed with a location protocol,

2

and is generated because the ELT is not connected to the navigation system and
receiving position data.

3

A 6-flash error will indicate the G-Switch loop between pins 5 and 12 on the D-Sub
connector is open or not installed.

(c) If a 7-flash error code is indicated, there is a problem with the battery or battery

connection wiring. Refer to Table 6, on page 46.

SUBTASK 25-62-31-450-002

B. New Battery Installation

CAUTION

(1) This subtask applies to installation of a new (i.e., replacement) battery.

(2) Verify the bottom of the ELT is clean and free of battery corrosion residue. Clean as

: DO NOT USE CONTACT CLEANER ON ELT COMPONENTS. SUCH CHEMICAL AGENTS

CAN BE HIGHLY DESTRUCTIVE TO THE MOUNTING HARDWARE AND ELT HOUSING,
CAUSING CRACKING, FRACTURING AND OTHER DAMAGE.

necessary.

(3) Install the new gasket in the battery pack sealing groove.

(4) Perform Steps (4) through (12) of the procedure outlined in SUBTASK 25-62-31-450-001 on

page 71.

25-62-31

Page 72 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(5) Place the duplicate copy of the battery expiration date label on the ELT in a location where it

is visible when the ELT is installed in the mounting tray.

NOTE

: The label is supplied with the new battery pack.

(6) Enter the pertinent battery replacement information in the logbook (i.e., aircraft records) and

fill out any other required documentation.

25-62-31

Page 73 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

+Z

-Z

+X

-X

-Y

+Y

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

TASK 25-62-31-410-803

9. Helicopter Installations - Special Considerations

SUBTASK 25-62-31-990-001

A. Background

(1) There are few guidelines, aside from experience, regarding the best way to mount an ELT in

helicopters.

(2) Before the availability of multi-axis G-switch modules, manufacturers advised installing ELTs

with the sensitive axis pointing approximately 45° downward from the normal forward
direction of flight.

(a) This mounting attitude was adapted due to a combination of the directional sensing

limitations of a single-axis G-switch and the flight characteristics of helicopters.

(b) Mounting the ELT in this attitude and orientation is currently specified by CAR, Part 5,

Subpart 551.104.

(c) Experience has indicated this mounting angle tends to preload the G-switch and

“nuisance” activation can occur as a result of severe aircraft maneuvers, and abrupt
takeoffs and landings.

(3) ACR does not recommend installing ELTs designed with a single-axis G-switch in helicopters

due the limitations and issues cited above.

SUBTASK 25-62-31-990-002

B. Recommendations

(1) The ME406P ELT may be used in helicopters, because it is equipped with a 5-axis G-switch

module in addition to the usual primary G-switch, which is oriented to the direction of flight.
See Figure 26. ELT Orthogonal Axes.

Figure 26. ELT Orthogonal Axes

(2) The six-axis coverage of the ME460P design accommodates the flight characteristics of

helicopters, while allowing “normal” installation and eliminating or significantly reducing
“nuisance” ELT activations.

Page 74 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

SUBTASK 25-62-31-410-001

C. Orientation

(1) Mount the ME406P ELT parallel to the waterline of the fuselage, along the longitudinal axis,

with the direction-of-flight arrow on the ELT pointing forward.

NOTE

: This is the orientation of the primary G-switch in the ELT.

(2) The ELT may be oriented on any of its horizontal axes in 90° increments.

NOTE

: Ensure that the front of the ELT is aligned with the nose of the aircraft with no more

than 5° deflection in any direction to ensure proper operation of the 6-axis G-switch
sensors.

(3) All other installation requirements contained herein are applicable and must be adhered to.

ME406P (453-6611)

25-62-31

Page 75 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

APPENDIX A – ELT REGISTRATION

TASK 25-62-31-990-801

1. Background Information

SUBTASK 25-62-31-990-001

A. Hex ID Code

(1) Each 406 MHz ELT is programmed with a unique hex ID code (i.e., registration code) that is

transmitted to the SAR satellite system. At a minimum, this code provides information
regarding:

(a) Unique aircraft or ELT identification,

(b) Country of origin, and

(c) Latitude and longitude position data, if equipped with a navigation interface device.

ME406P (453-6611)

SUBTASK 25-62-31-990-002

B. Reason for Registration

(1) ELT registration aids the Rescue Coordination Center (RCC) in determining if an actual

emergency exists by accessing a database containing the registration information, which
facilitates inquiries as to the whereabouts of the aircraft, existence of a flight plan, etc.

(a) Owner’s name,

(b) Address,

(c) Telephone number,

(d) Aircraft type, and registration number.

SUBTASK 25-62-31-990-003

C. Registration Information Resources

(1) Refer to COSPAS-SARSAT documents G.005 and S.007 for information regarding ELT

programming and registration. These documents are available at www.cospas-sarsat.org

.

25-62-31

Page 76 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-990-802

2. Registration

SUBTASK 25-62-31-990-001

A. Responsibility

(1) It is the responsibility of the aircraft owner to register the ELT.

(a) If an ELT is moved to a different aircraft (i.e., an aircraft other than the one it was

originally installed on), and/or the aircraft is registered in a new country, the ELT must
be re-registered.

(b) If the aircraft is registered in a new country, the ELT must be re-registered.

(c) The product label must re-marked with the new HEX ID code to indicate new

programming, if applicable.

SUBTASK 25-62-31-990-002

B. Required Information

ME406P (453-6611)

(1) The following information is required when registering an ELT:

(a) The unique Hex ID code printed on the ELT product label,

(b) The information listed in SUBTASK 25-62-31-990-002 on page 76.

(2) The information (i.e., address, telephone number, etc.), filed as part of the registration

process, should be kept up to date.

SUBTASK 25-62-31-990-003

C. Where to Register

(1) In the United States, the National Oceanic and Atmospheric Administration (NOAA) is the

registration agency.

(2) Specific registration web sites and information may be found at:

(a) The Artex products web site at www.acrartex.com

sites and also a link to registration forms and instructions for a number of countries.

(b) An ELT may also be registered in the United States by going directly to the NOAA ELT

registration web site at www.beaconregistration.noaa.gov

: NOAA may also be contacted by mail at SARSAT Beacon Registration, NSOF, E/

NOTE

, which has links to on-line registration

.

SPO53 1315 East West Hwy, Silver Spring, MD 20910-3282, or by phone at 1­888-212-7283 or 301-817-4565.

(3) In other countries, the national civil aviation authority in the applicable country should be

contacted to obtain registration information.

25-62-31

Page 77 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

TASK 25-62-31-990-801

1. Introduction

SUBTASK 25-62-31-990-001

A. Purpose

(1) This illustrated parts list (IPL) illustrates and lists the spare parts, with attaching hardware,

applicable to the ME406P ELT.

(2) Parts and components not listed herein, are not field replaceable and ELT repairs requiring

parts outside the scope of this manual must be accomplished by the manufacturer.

SUBTASK 25-62-31-990-002

B. IPL Usage Guide

ME406P (453-6611)

ILLUSTRATED PARTS LIST

(1) If the part number is not known:

(a) Find the part in the IPL Figure illustration.

(b) Note the item number assigned to the part.

(c) Refer to the associated parts list and find the item number in the “Fig # & Item” column.

(2) If the part number is known:

(a) Refer to the parts list and find the part in the “Part #” column.

(b) Note the figure number and item number assigned to the part.

(c) Refer to the illustration in the applicable IPL figure to find attaching hardware and

related assembly parts.

(3) In cases where multiple item numbers are shown on an illustration for the same item, there is

more than one part number option associated with that item.

25-62-31

Page 78 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

TASK 25-62-31-990-802

2. Manufacturer Name and Address

SUBTASK 25-62-31-990-001

A. Ordering Information

(1) Approved parts may be ordered from ACR Electronics, or any authorized dealer.

CONTACT INFORMATION

Sales, ACR Electronics, Inc / Artex Products

Fort Lauderdale, FL 33312-6645 USA

Phone: [phone]

5757 Ravenswood Rd

Fax: [phone]

25-62-31

Page 79 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

TASK 25-62-31-990-803

3. Explanation of Detailed Parts List Entries

SUBTASK 25-62-31-990-001

A. Fig # & Item Column

(1) The first number at the top of the column is the figure number of the corresponding

illustration.

(2) The right hand number is the item number in the associated figure.

(3) A dash (–) in front of an item means the part is not illustrated.

(4) Alpha-variants A through Z (except I and O) are assigned to item numbers, when necessary to

identify added parts, alternate parts, and service bulletin modified parts.

SUBTASK 25-62-31-990-002

B. Part # Column

(1) This column contains the manufacturer’s part number for each part.

SUBTASK 25-62-31-990-003

C. Nomenclature Column

(1) This column contains descriptive nomenclature for each part, service bulletin numbers

affecting the part, and obsolete part numbers.

(2) The indenture system used in the “Nomenclature” column indicates the relationship of one

part to another, as follows:

1 2 3

End Item or Major Assembly

ATTACHING PARTS

Attaching Parts for End Item or Major Assembly

***

. Detail Parts for End Item or Major Assembly

. Subassemblies

ATTACHING PARTS

. Attaching Parts for Subassemblies

***

. . Detail Parts for Subassemblies

ATTACHING PARTS

. . Attaching Parts for Detail Parts

***

25-62-31

Page 80 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

(3) Assemblies, subassemblies, and detail parts subject to modification, deletion, addition, or

replacement by an issued service bulletin, are annotated to indicate both pre- and post­service bulletin configurations. The term (PRE SB XXXX) in the “Nomenclature” column
designates the original configuration, and the term (POST SB XXXX) identifies assemblies and
parts after the modification has been completed.

(4) The terms defined below are used when applicable to indicate the interchangeability of parts.

TERM ABBREVIATION DEFINITION

The listed part is alternate to, and interchangeable

Alternate ALT

with, other parts within the same item number

variant group or other item numbers if

designated.

Superceded By SUPSD BY

Supersedes SUPSDS

Replaced By REPLD BY

Replaces REPLS

SUBTASK 25-62-31-990-004

D. UPA (Units Per Assembly) Column

(1) The quantity shown in this column represents the units required for one next higher assembly

or, when referring to attaching parts, the quantity to attach one such item.

(2) The abbreviation RF (reference) indicates the end item assembly is listed for reference

purposes.

The part is replaced by and is not interchangeable

with the item number designated in the notation.

The part replaces and is not interchangeable with

the item number designated in the notation.

The part is replaced by and is interchangeable

with the item number designated in the notation.

The part replaces and is interchangeable with the

item number designated in the notation.

25-62-31

Page 81 of 85

JUN 25/13

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

01

03

02

04

05

06

TASK 25-62-31-990-804

4. Detailed Parts List

Figure 27. ME406P ELT Main Assembly and Installation

ARTEX PRODUCTS / ACR ELECTRONICS, INC

ME406P (453-6611)

FIG # ITEM PART # 1234 NOMENCLATURE UPA

27 01 453-6611 ME406P Main Assembly 1

***

02 452-6499 . ME406 Lithium Battery Pack 1

03 183-0050 . Gasket, 0.093” x 0.055” 1

ATTACHING PARTS

04 201-0402 . Screw, 6-32x7/8, PHIL, TRUSS, S/S 8

***

05 452-3034 Mounting Tray Assembly 1

06 452-3075-1 Mounting Tray Assembly 1

ATTACHING PARTS

– 201-0810 Screw, PHIL 8-32 x 5/8” SS 4

– 246-0008 Washer, Flat 1/2” SS #8 4

Page 82 of 85

25-62-31

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

FIG # ITEM PART # 1234 NOMENCLATURE UPA

– 241-0832 Nut, Hex 8-32 x 1/4” SS 4

***

– 591-0999-01 . Label, ME406 Country/Hex ID 1

***

25-62-31

Page 83 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

WIRING HARNESS

(Ref. Only)

02

04

01

03

05

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

Figure 28. Electrical Components

FIG # ITEM PART # 1234 NOMENCLATURE UPA

28 01 345-6196-04 Switch, Cockpit Remote 1

ATTACHING PARTS

– 201-0408 Screw, PHIL 4-40 x 1/4” SS 4

– 247-0400 Washer, Internal Lock SS #4 4

– 241-0440 Nut, 4-40 x 1/4” Hex SS 4

***

– 591-0428 . Label, ELT Cautionary Use Advisory 1

***

02 151-5009 Plug, 9-Pin 1

***

– 151-6628 . Terminal, Crimp Female 0.062 Dia. 9

***

03 150-1130 Connector, D-Sub, 15-Pin, Female, Solder Contacts 1

04 150-1127 Housing, D-Sub, 15-Pin, Grommet., Thumbscrews 1

***

– 850-0814 . Sealant Strip, D-Sub Connector 2

***

05 452-6505 Buzzer (ELT Audible Alert) 1

25-62-31

Page 84 of 85

JUN 25/13

ARTEX PRODUCTS / ACR ELECTRONICS, INC

01

02

03

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

ME406P (453-6611)

Figure 29. Antennas

FIG # ITEM PART # 1234 NOMENCLATURE UPA

29 01 110-338 Antenna, Tri-Band CI317-1 (Single Input) 1

02 110-773 Antenna, 121.5/406 MHz Whip 1

03 110-775 Antenna, Portable 121.5/406 MHz 1

***

– 611-6013-04 . Cable, Coax BNC to BNC (6 ft.) 1

***

25-62-31

Page 85 of 85

JUN 25/13