UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED
ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1
Rev.
5
7-4
Apr
15/15
Table 7-3. GTX 330 Transponder Failure/Fault Messages
Failure Message
Cause
Corrective Action
Transponder FAIL
message
The internal transmit or squitter
monitors have detected a failure.
Return the unit to Garmin.
Fatal Error Page
Displayed
THE GTX 330 has failed the
internal power-up integrity
check.
Return the unit to Garmin.
NO ADSB
The transponder has insufficient
data to support ADS-B Out
transmission.
Ensure the aircraft has a clear
view of the sky.
Ensure position source (GPS)
is powered and receiving valid
GPS position data.
Ensure ADS-B TX is selected
to ON.
3-3. Periodic
Inspections
A. The following inspection checklist is intended as a guide for 100 hour/annual inspections
for aircraft operating under normal conditions.
Date
Signature
Aircraft Registration Number
Aircraft Serial Number
GTX 330 With ADS-B Out
INITIAL EACH ITEM AFTER ACCOMPLISHMENT
Inspect the following items every 100 hours or annually
INITIAL
1. Inspect the electrical wiring, coaxial cables, and mounts for security,
damage, and obvious defects.
2. Inspect the GTX 330 unit and mount for security, damage, and obvious
defects. Inspect any bonding straps for corrosion, loose connections, or
damage.
3. Inspect the antenna and mount for security, damage, and obvious defects.
B. Every 24 calendar months, the GTX 330 must be tested and shown to comply with 14
CFR Part 91.411, 91.413, and Part 43 Appendix E and F. See Section 4-1-6.
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