Garmin GDL 88, GDL 84 Instructions
Instructions for Continued Airworthiness
GDL 84/88 Part 23 AML STC
as installed in
(Make and Model Airplane)
Reg. No. ___________ S/N __________
Dwg. Number:
190-01310-01 Rev. 3
Garmin International, Inc.
1200 E. 151st Street
Olathe, Kansas 66062 USA
Record of Revision
Rev. Date Description of Change
1 11/21/2012 Initial Release
2 1/7/2015 Updated to add GDL 84
3
10/22/2015
Update to add Flight Stream
Company Proprietary Information
This drawing and the specifications contained herein are the property of Garmin International or its
subsidiaries and may not be reproduced or used in whole or in part as the basis for manufactu re or sale
of products without written permission.
Copyright 2012-2015 Garmin Ltd. or its subsidiaries. All rights reserved.
Garmin International, Inc.
1200 E. 151
st
Street
Olathe, Kansas 66062 U.S.A.
Instructions for Continued Airworthiness GDL 84/88 Part 23 AML STC
Page ii 190-01310-01 Rev. 3
Table of Contents
1. INTRODUCTION ................................................................................................................................... 1
1.1 Purpose ......................................................................................................................................... 1
1.2 Scope ............................................................................................................................................ 1
1.3 Document Control .............................................................................................................. ........... 1
1.4 Permission to Use Certain Documents ......................................................................................... 1
1.5 Definitions ...................................................................................................................................... 1
1.6 Terminology ................................................................................................................................... 2
2. INSTRUCTIONS FOR CONTINUED AIRWORTHINESS ..................................................................... 2
2.1 Introduction .................................................................................................................................... 2
2.2 Description of Alteration ................................................................................................................ 2
2.3 Control, Operating, and Testing Information ................................................................................. 3
2.4 Servicing Information .................................................................................................................... 4
2.5 Periodic Maintenance .................................................................................................................... 4
2.6 Troubleshooting Information ......................................................................................................... 7
2.7 Removal and Replacement Information ........................................................................................ 7
2.8 Diagrams ....................................................................................................................................... 7
2.9 Special Inspection Requirements.................................................................................................. 8
2.10 Application of Protective Treatments ............................................................................................ 8
2.11 Data Relative to Structural Fasteners ........................................................................................... 8
2.12 Special Tools ................................................................................................................................. 8
2.13 Additional Instructions ................................................................................................................... 8
2.14 Overhaul Period ............................................................................................................................ 8
2.15 ICA Revision and Distribution ....................................................................................................... 8
2.16 Assistance ..................................................................................................................................... 8
2.17 Implementation and Record Keeping ............................................................................................ 8
3. AIRWORTHINESS LIMITATIONS SECTION ....................................................................................... 9
APPENDIX A EQUIPMENT LOCATIONS AND WIRE ROUTING ........................................................ 10
Table of Figures
Figure 1. GDL 84/88 System Block Diagram ................................................................................................ 3
Table of Tables
Table 1. Maintenance Intervals ..................................................................................................................... 4
Instructions for Continued Airworthiness GDL 84/88 Part 23 AML STC
Page iii 190-01310-01 Rev. 3
1. INTRODUCTION
1.1 Purpose
This document is designed for use by the installing agency of the Garmin GDL 84/88 as Instructions for
Continued Airworthiness in response to 14 CFR §23.1529, and Part 23 Appendix G. This ICA includes
information required by the operator to adequately maintain the Garmin GDL 84/88 with optional Flight
Stream 110/210 installed under Approved Model List (AML) STC.
1.2 Scope
This document provides the Instructions for Continued Airworthiness for aircraft modified by the
installation of the Garmin GDL 84/88 with optional Flight Stream 110/210 under AML STC.
1.3 Document Control
This document shall be released, archived, and controlled in accordance with the Garmin document
control system. When this document is revised, refer to Section 2.15 for information on how to gain FAA
acceptance or approval and how to notify customers of changes.
1.4 Permission to Use Certain Documents
Permission is granted to any corporation or person applying for approval of a Garmin GDL 84/88 with
optional Flight Stream 110/210 to use and reference appropriate STC documents to accomplish the
Instructions for Continued Airworthiness and show compliance with STC engineering data. It is the
responsibility of the applicant to determine the suitability of the documents for the ICA.
1.5 Definitions
The following terminology is used within this document:
1) ADS-B: Automatic Dependent Surveillance-Broadcast
2) AML: Approved Model List
3) BIT: Built-In Test
4) CDTI: Cockpit Display of Traffic Information
5) CFR: Code of Federal Regulations
6) CPU: Central Processing Unit
7) FAA: Federal Aviation Administration
8) GDL: Garmin Datalink Transceiver
9) GPS: Global Positioning System
10) ICA: Instructions for Continued Airworthiness
11) IM: Installation Manual
12) I/O: Input/Output
13) LRU: Line Replaceable Unit
14) MHz: Mega Hertz
15) PMI: Principal Maintenance Inspector
16) RX: Receive
17) SBAS: Satellite-Based Augmentation System
18) STC: Supplemental Type Certificate
19) TAS: Traffic Awareness System
20) TCAS: Traffic Collision Avoidance System
21) TSO: Technical Standard Order
22) TX: Transmit
23) UAT: Universal Access Transceiver
Instructions for Continued Airworthiness GDL 84/88 Part 23 AML STC
Page 1 of 12 190-01310-01 Rev. 3
1.6 Terminology
The GDL 84 is a remote-mounted unit available in one variant that does not support diversity (TSOC154c Class A1S) and contains an internal GPS/SBAS receiver.
The GDL 88 is a remote-mounted unit available in four variants. The variants support diversity
(TSO-C154c Class A1H) or do not support diversity (TSO-C154c Class A1S) and contain internal
GPS/SBAS receiver or utilizes external GPS/SBAS source.
Except where specifically noted, references made to the ‘GDL 84/88’ apply equally to all units: GDL 84,
GDL 88, GDL 88D, GDL 88 with GPS/SBAS, and GDL 88D with GPS/SBAS.
The Flight Stream 110 and Flight Stream 210 bring Bluetooth® connectivity to the cockpit, allowing
portable electronics to stream data to and from the installed avionics. Specific to the interface to the
GDL 84/88, the Flight Stream 110 and Flight Stream 210 provide FIS-B weather, ADS-B traffic, and GPS
position from the GDL 84/88 to portable electronics.
Except where specifically noted, references made to the ‘Flight Stream 110/210’ applies equally to the
Flight Stream 110 and Flight Stream 210.
2. INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
2.1 Introduction
Content, Scope, Purpose and Arrangement: This document identifies the Instructions for
Continued Airworthiness for the modification of
the aircraft by installation of the Garmin
GDL 84/88 and optional Flight Stream 110/210.
Applicability: Applies to aircraft altered by installation of the
Garmin GDL 84/88 and optional Flight Stream
110/210.
Definition of Abbreviations: See Section 1.5 and Section 1.6.
Precautions: None
Units of measurement: None
Referenced publications: Garmin 190-01310-00 Rev. 6, “Installation
Manual, GDL 84/88 Part 23 AML STC” or later
revisions;
Garmin 190-01122-03 Rev. E, “GDL 84/88 ADS-B
Transceiver Pilot’s Guide” or later revisions.
Retention: This document, or the information contained
within, will be included in the aircraft’s permanent
records.
The GDL 84/88 AML STC Installation Manual (190-01310-00) is referenced extensively throughout this
document. To improve readability, references to the installation manual are abbreviated as GDL-IM.
2.2 Description of Alteration
The GDL 84/88 is a remote-mounted UAT Datalink Transceiver that provide ADS-B functionality as part of
an ADS-B Out configuration, ADS-B In configuration, or ADS-B Out and In configuration. ADS-B Out
transmissions are via 978 MHz UAT and ADS-B In reception is via 978 MHz UAT and 1090 MHz
extended squitter. In addition, the GDL 88 correlates traffic from multiple sources and provides traffic to a
cockpit display (CDTI). The Flight Stream 110/210 interfaces with the GDL 84/88 through RS-422.
Installation configuration is dependent on desired functionality and access to required sensors and
Instructions for Continued Airworthiness GDL 84/88 Part 23 AML STC
Page 2 of 12 190-01310-01 Rev. 3
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