97-54 Garmin GDL 88 ADS-B In Receiver Installation
Refer to R66 Illustrated Parts Catalog (IPC) Figure 97-27.
NOTE
Refer to Garmin GDL 88 Maintenance Manual and Instructions
for Continued Airworthiness.
A. Description of New Features
Automatic Dependent Surveillance-Broadcast (ADS-B) "Out" equipment transmits
aircraft specific-data and position information to air traffic control via GPS-based
surveillance (rather than radar-based surveillance). ADS-B "In" equipment receives
data from other aircraft or from air traffic control. The R66 may be equipped with
ADS-B Out or with ADS-B Out and ADS-B In systems. Refer to § 97-15.
The ADS-B In system receives data via the C803-2 ADS-B (Garmin GDL 88) universal
access transceiver (used as a receiver) on frequencies 978 MHz and 1090 MHz.
Received data is displayed on the primary GPS screen. Refer to § 97-16.
B. Schematic
Refer to Figure 98-10 for C803-2 ADS-B Installation electrical schematic.
C. Removal
1. Turn battery switch off and pull out XPDR (5 amp) circuit breaker at panel.
2. Under left front seat, disconnect airframe harness from GDL 88 receiver at
connectors.
3. Remove screws securing GDL 88 receiver to C904-1 mount assembly, and remove
GDL 88 receiver.
D. Installation
1. Turn battery switch off and pull out XPDR (5 amp) circuit breaker at panel.
2. Under left front seat, position GDL 88 receiver on C904-1 mount assembly and
install screws. Verify security.
3. Connect airframe harness to GDL 88 receiver at connectors.
4. Push in XPDR (5 amp) circuit breaker at panel. Turn battery & avionics switches
on.
5. Perform appropriate functional checks per Garmin GDL 88 Pilot's Guide. Turn
battery & avionics switches off.
Page 97.20 Chapter 97 Avionics MAY 2015
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