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Enstrom TH-28/480 Series Maintenance Manual Supplement 8
G1000H Integrated Flight Deck System
Rev. 1, Jan 25/18
Page
1-41
GTX 33H Transponder (Figure 27)
1.5.8.1 Scheduled
Maintenance
The GTX 33H is subject to conditional maintenance with the exception described in
Section 7 of the G1000H Integrated Avionics System Standard Maintenance Manual.
1.5.8.2 Removal
A. Remove power to the GTX 33H. Pull the MFD and XPNDR circuit breakers out
(MFD circuit breaker is also located on the emergency circuit breaker panel).
Disable the circuit breaker by installing a cable tie or other similar device around
the circuit breaker stem.
B. Access the GTX 33 by removing the MFD (para. 1.5.1.2).
C. Loosen the install screw.
D. Pull the GTX 33 outward and up to at least .34 inch to clear the rack mounting
hardware and align with retaining wedges.
E. Remove the unit from the rack.
1.5.8.3 Installation
A. Inspect rack connectors for damaged pins before installing the unit.
B. Locate unit on the rack. Lift unit up .34 inch to clear the rack mounting hardware
and align with retaining wedges.
C. Tighten the installation screw to 15 +/- 2 in-lb.
D. Reinstall the MFD (para. 1.5.1.3).
E. Remove the cable tie or other similar device from the MFD and XPNDR circuit
breaker stem and push the stem in to set the circuit breaker.
F. Perform the GTX 33 testing procedure in accordance with Section 6 of the G1000H
Integrated Avionics System Standard Maintenance Manual.
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