Pilot's Guide
Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT/GTi
190-00663-02 Rev. B544
APPENDIX A
Message Comments
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.
GDL 69A MESSAGE ADVISORIES
Message Comments
GDL69 CONFIG
– GDL 69 config
error. Config service req’d.
GDL 69 configuration settings do not match those of backup configuration memory.
The G1000 system should be serviced.
GDL69 FAIL
– GDL 69 has failed. A failure has been detected in the GDL 69. The receiver is unavailable. The G1000
system should be serviced
MANIFEST
– GDL software mismatch,
communication halted.
The GDL 69 has incorrect software installed. The G1000 system should be serviced.
GDC 74B MESSAGE ADVISORIES
Message Comments
ADC1 ALT EC
– ADC1 altitude error
correction is unavailable.
GDC1 or GDC2 is reporting that the altitude error correction is unavailable. The
G1000 system should be serviced.
ADC2 ALT EC
– ADC2 altitude error
correction is unavailable.
ADC1 AS EC
– ADC1 airspeed error
correction is unavailable.
GDC1 or GDC2 is reporting that the airspeed error correction is unavailable. The
G1000 system should be serviced.
ADC2 AS EC
– ADC2 airspeed error
correction is unavailable.