UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED
ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1
Rev.
7
10-3
Aug
28/17
SECTION 3
SERVICING, TROUBLESHOOTING, AND PERIODIC INSPECTIONS
3-1. Servicing
A. The GNC 255A installation contains no user serviceable components or assemblies.
Operations involving the removal of the GNC 255A must be done by authorized
maintenance technicians.
3-2. Troubleshooting
A. Refer to the electrical schematic in Diagram 10-1 when troubleshooting the GNC 255A
installation. If the GNC 255A unit fails to operate after troubleshooting efforts, contact
Garmin aviation product support for assistance (ref. para. 1-2).
3-3. Periodic
Inspections/Maintenance
A. The following inspection checklist is intended as a guide for 100 hour/annual inspections
for aircraft operating under normal conditions. More frequent inspections may be required
should adverse operating conditions be encountered.
Date
Signature
Aircraft Registration Number
Aircraft Serial Number
GNC 255A
INITIAL EACH ITEM AFTER ACCOMPLISHMENT
Inspect the following items every 100 hours or annually
INITIAL
1. Inspect the antennas, electrical wiring and mounts for security,
damage, and obvious defects.
2. Inspect the GNC 255A unit and mount for security, damage, and
obvious defects.
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