Garmin GDL 88 User manual
Garmin International
1200 E. 151st Street Olathe, KS 66062
USA
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
for STC SR02123SE
GARMIN GDL 84H/88H ADS-B TRANSCEIVER
LOG OF REVISIONS
Revision
Number
Date
Description
1
07/29/2015
Complete Supplement
190-01310-J1 Rev. 1 Page 2 of 15
FAA APPROVED
Garmin International
1200 E. 151st Street Olathe, KS 66062
USA
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
for STC SR02123SE
GARMIN GDL 84H/88H ADS-B TRANSCEIVER
Table of Contents
SECTION PAGE
Section 1. LIMITATIONS 4
1.1 Minimum Equipment 4
1.2 ADS-B Out 4
1.3 Anonymous Mode 4
1.4 Applicable System Software 5
1.5 Pressure Altitude Broadcast Inhibit (PABI) 5
1.6 Traffic Alerting 5
1.7 Rotorcraft with No Heading Source 5
Section 2. NORMAL PROCEDURES 6
2.1 Unit Power On 6
2.2 Before Takeoff 6
2.3 VISUAL/AURAL TRAFFIC ALERT 6
Section 3. EMERGENCY AND MALFUNCTION PROCEDURES 6
3.1 Abnormal Indications 6
Section 4. PERFORMANCE DATA 7
MANUFACTURER'S DATA
Section 1. WEIGHT AND BALANCE DATA 8
Section 2. SYSTEMS DESCRIPTION 8
Garmin GDL 84H/88H UAT Transceiver 8
Definitions 10
Section 3. OPERATIONAL INFORMATION 11
Installation Configuration 11
Pilot’s Guide 12
Mode 3/A Code, IDENT, and Emergency Status 12
Flight ID 12
Transmitted Air Ground Status 12
Pressure Altitude Broadcast Inhibit 13
Traffic Sources and Alerting 13
On Scene Mode (OSM) 13
Interfaced Active Traffic System (Optional, GDL 88H Only with GTN) 14
Power 14
External Switches 15
Section 4. HANDLING/SERVICE AND MAINTENANCE 15
190-01310-J1 Rev. 1 Page 3 of 15
FAA APPROVED
Garmin International
1200 E. 151st Street Olathe, KS 66062
USA
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
for STC SR02123SE
GARMIN GDL 84H/88H ADS-B TRANSCEIVER
Interfaced Equipment
Number
Installed
Number Required
Transponder
1 or more
1
Barometric altitude source
1 or more
1
Interfaced Equipment
Number
Installed
Number Required
GPS Navigator (GTN or GNS)
1 or more
1
Transponder
1 or more
1
Barometric altitude source
1 or more
1
Section 1. LIMITATIONS
1.1 Minimum Equipment
The GDL 84H must have the following system interfaces fully functional in
order to be compliant with the requirements for 14 CFR 91.227 ADS-B Out
operations:
Table 1 – Required Equipment
The GDL 88H must have the following system interfaces fully functional in
order to be compliant with the requirements for 14 CFR 91.227 ADS-B Out
operations:
Table 2 – Required Equipment
1.2 ADS-B Out
The GDL 84H/88H only complies with 14 CFR 91.227 for ADS-B Out when all
required functions are operational as indicated by:
External ADS-B annunciator not illuminated (if installed) OR
GTN or GNS interfaced display - GDL 88 ADS-B messages for ADS-
B Out functions not anunnciated.
1.3 Anonymous Mode
Anonymous Mode must only be operated while operating under VFR while
squawking a VFR code. If requested by Air Traffic Control, Anonymous Mode
must be turned off.
190-01310-J1 Rev. 1 Page 4 of 15
FAA APPROVED
Garmin International
1200 E. 151st Street Olathe, KS 66062
USA
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
for STC SR02123SE
GARMIN GDL 84H/88H ADS-B TRANSCEIVER
GDL 84H/88H Software Version
(or later FAA Approved versions for this STC)
3.32
1.4 Applicable System Software
This RFMS is applicable to the software versions shown in Table 3.
The Main software version is displayed on the External LRU page available on
some interfaced display devices
Table 3 - Software Versions
1.5 Pressure Altitude Broadcast Inhibit (PABI)
While operating within airspace requiring ADS-B equipment, per 14 CFR
91.225, Pressure Altitude Broadcast Inhibit shall only be enabled when
requested by Air Traffic Control.
1.6 Traffic Alerting
Traffic alerting is an aid to visual acquisition and may not be used as the sole
basis for rotorcraft maneuvering.
1.7 Rotorcraft with No Heading Source
Rotorcraft which do not have a heading source interfaced to the GDL 88H are
subject to the following limitations:
The traffic page is oriented to rotorcraft TRACK, which may or may
not align with rotorcraft heading.
The traffic display will not show ADS-B traffic when groundspeed is
less than 15 knots. The traffic display will show “UNAVAILABLE”.
If interfaced with a TCAS system the targets from the TCAS system
which are not correlated with ADS-B targets will be displayed at a
bearing on the display that is incorrect by the crab angle of the
rotorcraft (difference between track and heading). When operating
with significant crab angles such as in rearward or sideward flight
above 15 knots the traffic display shall not be used.
190-01310-J1 Rev. 1 Page 5 of 15
FAA APPROVED
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