97-55 Garmin GTX 330 ES Transponder Installation (continued)
D. Installation
1. Turn battery switch off and pull out XPDR (5 amp) circuit breaker at panel.
2. Carefully plug-in/install C804-15 transponder in appropriate location in avionics tray.
3. Tighten radio key securing transponder to tray. Verify equipment security.
4. Push in XPDR (5 amp) circuit breaker at panel. Turn battery & avionics switches on.
5. Perform appropriate functional checks per Garmin GTX 330 ES Pilot's Guide. Turn
battery & avionics switches off.
E. Antenna
Refer to § 6-80 for antenna locations and R66 Illustrated Parts Catalog (IPC) Chapter 6.
NOTE
Antenna installation depends on optional equipment installed.
Removal
1. Turn battery switch off and pull out XPDR (5 amp) circuit breaker at panel.
2. Using plastic scraper, remove B270-1 sealant from around transponder antenna at
corners where it attaches to B322-11 mounting plate.
3. Remove screws securing mounting plate to cabin skin and disconnect antenna
cable from antenna. Remove hardware securing mounting plate to antenna and
remove antenna.
Installation
1. Turn battery switch off and pull out XPDR (5 amp) circuit breaker at panel.
2. Remove paint & primer from between cabin skin and B322-11 plate to ensure
electrical ground.
3. Install hardware securing transponder antenna to mounting plate. Verify security.
Apply small bead B270-1 sealant (0.1 inch max in height) around antenna at corners
where it attaches to mounting plate and allow to dry.
4. Connect antenna cable to antenna and install screws securing mounting plate to
cabin skin. Verify security.
5. Perform ground checks per Part D steps 4 and 5.
MAY 2015 Chapter 97 Avionics Page 97.23
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