Garmin G950 Pilot's Manual page 316

APPENDIX A
GRS 77 MESSAGE ADVISORIES
Message
AHRS1 TAS – AHRS1 not receiving
airspeed.
AHRS1 GPS – AHRS1 using backup
GPS source.
AHRS1 GPS – AHRS1 not receiving
any GPS information.
AHRS1 GPS – AHRS1 not receiving
backup GPS information.
AHRS1 GPS – AHRS1 operating
exclusively in no-GPS mode.
AHRS1 SRVC – AHRS1 Magnetic-field
model needs update.
GEO LIMITS – AHRS1 too far North/
South, no magnetic compass.
MANIFEST – GRS1 software
mismatch, communication halted.
GMU 44 MESSAGE ADVISORIES
Message
HDG FAULT – AHRS1 magnetometer
fault has occurred.
MANIFEST – GMU1 software
mismatch, communication halted.
GDL 69A MESSAGE ADVISORIES (OPTIONAL)
Message
GDL69 CONFIG – GDL 69 config
error. Config service req'd.
GDL69 FAIL – GDL 69 has failed.
MANIFEST – GDL software mismatch,
communication halted.
304
Comments
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 G950 system should
be serviced.
The #1 AHRS is using the backup GPS path. Primary GPS path has failed. The G950
system should be serviced when possible.
The #1 AHRS is not receiving any or any useful GPS information. Check AFMS
limitations. The G950 system should be serviced.
The #1 AHRS is not receiving backup GPS information. The G950 system should be
serviced.
The #1 AHRS is operating exclusively in no-GPS mode. The G950 system should be
serviced.
The #1 AHRS earth magnetic field model is out of date. Update magnetic field model
when practical.
The aircraft is outside geographical limits for approved AHRS operation. Heading is
flagged as invalid.
The #1 AHRS has incorrect software installed. The G950 system should be serviced.
Comments
A fault has occurred in the #1 GMU 44. Heading is flagged as invalid. The AHRS uses
GPS for backup mode operation. The G950 system should be serviced.
The GMU 44 has incorrect software installed. The G950 system should be serviced.
Comments
GDL 69 configuration settings do not match those of backup configuration memory.
The G950 system should be serviced.
A failure has been detected in the GDL 69. The receiver is unavailable. The G950
system should be serviced
The GDL 69 has incorrect software installed. The G950 system should be serviced.
Garmin G950 Pilot's Guide for the Tecnam P2006T 190-01146-00 Rev. A