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LMM for the Kodiak 100 Page 7-13
190-02102-00 Rev.4
If removal and replacement of a GRS 79 or GMU 44(B) unit is required after post-
installation calibration has been completed, the unit mounting racks must not be moved.
If the mounting bolts that secure the GRS 79 mounting racks are loosened for any
reason, a new post-installation calibration procedure A-1 (or A-2, if applicable), B and D
(plus C if recommended initially) must be carried out before the aircraft can be returned
to service.
Any GMU 44(B) removal or replacement requires repeating the magnetometer
calibration procedure (Procedure B), and if recommended initially, the heading offset
compensation procedure (Procedure C).
E
Magnetometer
Interference
Te st
Validate to Mag-
netic Interference
with GMU 44
Required for initial installation
certification. This test should also
be repeated to ensure all subse-
quent electrical changes associ-
ated with devices within 10.0 feet
of the GMU 44 Magnetometer.
Such changes include, but are
not limited to, wiring, shielding, or
grounding changes to any light,
strobe, beacon, or any other
electrical device located near the
GMU 44 unit. Likewise, this test
should also be repeated to
ensure all subsequent changes
to materials within 10.0 feet of
the GMU 44. Such changes
include, but are not limited to,
addition, removal, or modifica-
tion of ferrous or electrically con-
ductive materials located near
the GMU 44 unit. Garmin recom-
mends this test be performed at
least once every 12 months by all
aircraft manufacturers on a mini-
mum of one production aircraft
for every airframe type or model
equipped with the G1000 NXi
system.
Table 7-1. Post-Installation Calibration Procedure Summary (Continued)
Calibration
Procedure
Procedure
Name
Procedure
Description
Installations Requiring Procedure
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