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 at 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
Every 100 hour or annual inspection, determine software and database versions and
update per Garmin GTN 600/700 series Pilot's Guide as required.
NOTE
Garmin requires database information be updated regularly to
ensure information is current.
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 MAY 2015
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