Garmin G1000 Cockpit Reference Guide for the Socata TBM 850
190-00708-00 Rev. A
13-18
SECTION 13 – ANNUNCIATIONS
& ALERTS
GRS 77 Message Advisories (Cont.)
Message Comments
AHRS1 GPS
– AHRS1 not receiving
backup GPS information.
The #1 AHRS is not receiving backup GPS information. The G1000 system should
be serviced.
AHRS2 GPS
– AHRS2 not receiving
backup GPS information.
The #2 AHRS is not receiving backup GPS information. The G1000 system should
be serviced.
AHRS1 GPS
– AHRS1 operating
exclusively in no-GPS mode.
The #1 AHRS is operating exclusively in no-GPS mode. The G1000 system should
be serviced.
AHRS2 GPS
– AHRS2 operating
exclusively in no-GPS mode.
The #2 AHRS is operating exclusively in no-GPS mode. The G1000 system should
be serviced.
AHRS MAG DB
– AHRS magnetic
model database version mismatch.
The #1 AHRS and #2 AHRS magnetic model database versions do not match.
AHRS1 SRVC
– AHRS1 Magnetic-field
model needs update.
The #1 AHRS earth magnetic field model is out of date. Update magnetic field
model when practical.
AHRS2 SRVC
– AHRS2 Magnetic-field
model needs update.
The #2 AHRS earth magnetic field model is out of date. Update magnetic field
model when practical.
GEO LIMITS
– AHRS1 too far North/
South, no magnetic compass.
The aircraft is outside geographical limits for approved AHRS operation. Heading
is flagged as invalid.
GEO LIMITS
– AHRS2 too far North/
South, no magnetic compass.
MANIFEST
– GRS1 software
mismatch, communication halted.
The #1 AHRS has incorrect software installed. The G1000 system should be
serviced.
MANIFEST
– GRS2 software
mismatch, communication halted.
The #2 AHRS has incorrect software installed. The G1000 system should be
serviced.
GMU 44 Message Advisories
Message Comments
HDG FAULT
– AHRS1 magnetometer
fault has occurred.
A fault has occurred in the #1 GMU 44. Heading is flagged as invalid. The AHRS
uses GPS for backup mode operation. The G1000 system should be serviced.
HDG FAULT
– AHRS2 magnetometer
fault has occurred.
A fault has occurred in the #2 GMU 44. Heading is flagged as invalid. The AHRS
uses GPS for backup mode operation. The G1000 system should be serviced.
MANIFEST
– GMU1 software
mismatch, communication halted.
The GMU 44 has incorrect software installed. The G1000 system should be
serviced.
MANIFEST
– GMU2 software
mismatch, communication halted.
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