Garmin G1000 NAV III Line Maintenance Manual page 31

Annunciation
ATTITUDE FAIL
G1000 Nav III Line Maintenance Manual
190-00352-00
Associated Solution
LRU
•
Ensure that a cell phone or a device using cell phone
technology is not turned on (even in a monitoring state) in
the cabin.
•
Cycle GRS 77 power to restart initialization.
•
Ensure GRS 77 connecter is secure and proper wire
harness strain relief is provided.
•
Ensure the GRS 77 is fastened down tightly in it's
mounting rack and that the mounting rack is not loose
(CAUTION - do not loosen the mounting rack hardware to
the airframe shelf or the aircraft will need to be re-leveled
and the PITCH/ROLL OFFSET procedure performed).
•
Ensure aircraft battery is mounted securely if located near
the GRS 77.
•
Ensure GPS has acquired at least four satellites, has a 3D
navigation solution, and a DOP of less than 5.0. This is
GRS 77
particularly important for an ATTITUDE FAIL that appears
during ground operation only.
•
Perform an Engine Run-Up Test to check if engine
vibration is causing the GRS 77 to go offline.
•
Load configuration files to the PFD, MFD, GIA1, and
GIA2.
•
Calibrate the GRS 77 (Pitch/Roll Offset and
Magnetometer Calibration).
•
Replace GRS 77.
If problem persists replace GRS 77 configuration
o
module. See Section 3.4 for configuration
instructions.
•
Contact Garmin Aviation Product Support if condition
continues after replacing the GRS 77 and config module
for additional assistance.
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Rev. L