97-56 Garmin GTN 600/700-series GPS Installation (continued)
E. Antenna (continued)
Installation
1. Turn battery switch off and pull out GPS 1 (5 amp) and GPS 2 (5 amp) circuit
breakers as required on circuit breaker panel.
2. Remove paint & primer from antenna mating surfaces to ensure electrical
ground.
3. As required, apply light coat B270-13 sealant to screw threads and install
screws securing antenna to tailcone. As required, seal around screw heads and
fill fastener holes using B270-13 sealant and allow to dry. Verify security.
4. Apply small bead B270-1 sealant (0.1 inch max in height) around antenna at
corners where it attaches to tailcone and allow to dry.
5. Connect antenna cable to antenna. Verify security.
6. Perform ground checks per Part D steps 4 and 5.
F. Scheduled Maintenance and Inspections
NOTE
All factory-installed Garmin units are “on condition” and do not
require scheduled periodic maintenance. Units feature a BIT
(Built-In Test) function during each initial power-up that will
detect internal failure(s) and alert pilot.
NOTE
Refer to § 97-60 for avionics software information.
G. Special Maintenance and Inspections
1. Turn battery & avionics switches off. Open circuit breaker panel. Remove
hardware securing pilot's side console shell assembly to tray and carefully pivot
shell assembly upward (GPS[s] and faceplate may be also be removed).
2. Inspect condition of and verify no obvious damage to GPS(s), tray, copper bus
bars, circuit breaker, and wiring. Verify no loose, chafed, or broken wires or
terminals. Verify no evidence of arcing. Verify equipment security.
3. Secure circuit breaker panel and pilot's side console. Perform ground checks per
Part D steps 4 and 5.
Page 97.26
Chapter 97 Avionics APR 2019
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