Pilot's Guide
190-01263-01 Rev. A
Garmin G2000 Pilot’s Guide for the Cessna T240
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICES INDEX
563
Appendix A
GMU 44 MAGNETOMETER SYSTEM MESSAGES
System Message Comments
HDG FAULT
– AHRS1
magnetometer fault has
occurred.
A fault has occurred in the #1 or #2 GMU 44. Heading is flagged as invalid. The AHRS uses GPS
for backup mode operation. The system should be serviced.
HDG FAULT
– AHRS2
magnetometer fault has
occurred.
GRS 77 ATTITUDE AND HEADING REFERENCE SYSTEM MESSAGES
System Message Comments
AHRS1 TAS
– AHRS1 not
receiving airspeed.
The #1 AHRS is not receiving true airspeed from the air data computer. The AHRS relies on GPS
information to augment the lack of airspeed. The system should be serviced.
AHRS2 TAS
– AHRS2 not
receiving airspeed.
The #2 AHRS is not receiving true airspeed from the air data computer. The AHRS relies on GPS
information to augment the lack of airspeed. The system should be serviced.
AHRS1 GPS
– AHRS1 using
backup GPS source.
The #1 AHRS is using the backup GPS path. Primary GPS path has failed. The system should be
serviced when possible.
AHRS2 GPS
– AHRS2 using
backup GPS source.
The #2 AHRS is using the backup GPS path. Primary GPS path has failed. The system should be
serviced when possible.
AHRS1 GPS
– AHRS1 not
receiving any GPS information.
The #1 AHRS is not receiving any or any useful GPS information. Check AFMS limitations. The
system should be serviced.
AHRS2 GPS
– AHRS2 not
receiving any GPS information.
The #2 AHRS is not receiving any or any useful GPS information. Check AFMS limitations. The
system should be serviced.
AHRS1 GPS
– AHRS1
not receiving backup GPS
information.
The #1 AHRS is not receiving backup GPS information. The system should be serviced.
AHRS2 GPS
– AHRS2
not receiving backup GPS
information.
The #2 AHRS is not receiving backup GPS information. The system should be serviced.
AHRS1 GPS
– AHRS1 operating
exclusively in no-GPS mode.
The #1 AHRS is operating exclusively in no-GPS mode. The system should be serviced.
AHRS2 GPS
– AHRS2 operating
exclusively in no-GPS mode.
The #2 AHRS is operating exclusively in no-GPS mode. The 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The #1 AHRS earth magnetic field model is out of date.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.
AHRS1 SERVICE
– AHRS1 needs
service. Return unit for repair.
The #1 AHRS has an internal failure. Return unit for repair.