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ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1
Rev.
2
4-4
Dec
8/08
SECTION 4
SYSTEM MAINTENANCE
NOTE
Removal or installation of equipment will change the
aircraft empty weight and empty weight c.g. These
changes will be recorded on Form F-511-5, Basic
Weight and Balance Record, as required (reference
Enstrom F-28F/280F Series Maintenance Manual).
4-1. GDL
69/69A
4-1-1. Removal – GDL 69/69A
A. Turn the GNS 430W/530W or other applicable display unit and aircraft power
off. Pull the XM DL, COMM GPS or COMM/NAV GPS, and the COMM TX circuit breakers
out. Disable the circuit breaker by installing a cable tie or other similar device around the
circuit breaker system.
B. The GDL 69/69A is installed onto a tray mounted in the forward end of the
tailcone.
C. Disconnect the electrical cables.
D. Slide the unit out of the tray.
4-1-2. Inspection/Repair – GDL 69/69A
A. Inspect the condition and security of the mounting bracket and electrical
interface.
B. Inspect the condition and security of electrical cables.
C. Repair procedures are not available for the GDL 69/69A unit.
4-1-3. Installation – GDL 69/69A
A. Install the GDL 69/69A onto the tray.
B. Connect the electrical cables.
C. Remove the cable tie or other similar device from the XM DL, COMM GPS or
COMM/NAV GPS, and the COMM TX circuit breaker stems and push the stem in to set
the circuit breaker.
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