Pilot's Guide

Garmin G1000 Pilot’s Guide for the Beechcraft C90A/GT/GTi
190-00663-03 Rev. A558
APPENDIX A
Message Comments
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The #1 AHRS earth magnetic field model is out of date.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The #2 AHRS earth magnetic field model is out of date.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.
AHRS1 SERVICE – AHRS1 needs
service. Return unit for repair.
A failure has been detected in the #1 AHRS. The system should be serviced.
AHRS2 SERVICE – AHRS2 needs
service. Return unit for repair.
A failure has been detected in the #2 AHRS. The system should be serviced.
AHRS1 CONFIG – AHRS1 config error.
Config service req’d.
AHRS configuration settings do not match those of backup configuration memory.
The system should be serviced.
AHRS2 CONFIG – AHRS2 config error.
Config service req’d.
AHRS configuration settings do not match those of backup configuration memory.
The system should be serviced.
AHRS1 CAL – AHRS1 calibration version
error. Srvc req’d.
The #1 AHRS calibration version error. The system should be serviced.
AHRS2 CAL – AHRS2 calibration version
error. Srvc req’d.
The #2 AHRS calibration version error. The 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.