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Enstrom TH-28/480 Series Maintenance Manual Supplement 8
G1000H Integrated Flight Deck System
Rev. 1, Jan 25/18
Page 1-32
GIA 63H Integrated Avionics Unit (Figure 21)
1.5.3.1 Scheduled
Maintenance
There is no scheduled maintenance for the GIA 63H. Maintenance is “On Condition
Only”.
1.5.3.2 Removal
A. Remove power to the GIA 63H. Pull the MFD, COM 1 TX, COM 2 TX, IAU 1, and
IAU 2 circuit breakers out (MFD, IAU 1, and IAU 2 circuit breakers are 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. (GIA 63H #1) Access the GIA 63H #1 by removing the MFD (para. 1.5.1.2).
C. (GIA 63H #2) Access the GIA 63H #2 by removing the copilot side keel access
panel (TH-28/480 Series Maintenance Manual (MM), para. 8-14, B).
D. Loosen the install screw.
E. Pull the GIA 63H outward and up at least .34 inch to disengage and clear the
retaining wedges for removal.
F. Remove the unit from the rack.
1.5.3.3 Installation
A. Inspect rack connectors for damaged pins before installing the unit.
B. Locate the GIA 63H on the rack. Lift unit up .34 inch to clear rack mounting
hardware and align with retaining wedges.
C. Tighten installation screw to 15 +/- 2 in-lb.
D. Reinstall the MFD (para. 1.5.1.3) or keel access panel (MM, para. 8-17, B), as
applicable.
E. Remove the cable tie or other similar device from the MFD, COM 1 TX, COM 2 TX,
IAU 1, and IAU 2 circuit breaker stem and push the stem in to set the circuit breaker.
F.
Perform the GIA 63H testing procedure in accordance with Section 6 of the G1000H
Integrated Avionics System Standard Maintenance Manual.
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