Grs 77 Message Advisories; Gmu 44 Message Advisories; Gdl 69 Message Advisories - Garmin G1000 Reference Manual

APPENDIX A

GRS 77 Message Advisories

Alerts Window Message
AHRS TAS – AHRS not receiving
airspeed.
AHRS GPS – AHRS using backup GPS
source.
AHRS GPS – AHRS not receiving GPS
information.
AHRS GPS – AHRS not receiving
backup GPS information.
AHRS GPS – AHRS operating
exclusively in no-GPS mode.
MANIFEST – GRS1 software mismatch.
Communication halted.
BACKUP PATH – AHRS using backup
data path.
AHRS SERVICE – AHRS Magnetic-field
model needs update.
GEO LIMITS – Too far North/South, no
magnetic compass.

GMU 44 Message Advisories

Alerts Window Message
HDG FAULT – A magnetometer fault
has occurred.
MANIFEST – GMU1 software
mismatch. Communication halted.

GDL 69 Message Advisories

Alerts Window Message
GDL69 CONFIG – GDL 69 configura-
tion error. Config service req'd.
GDL69 FAIL – GDL 69 has failed.
150
Comments
The AHRS is not receiving true airspeed from the air data computer. The AHRS relies
on GPS information to augment the lack of airspeed. The G1000 system should be
serviced.
The AHRS is using the backup GPS path. Primary GPS path has failed. The G1000
system should be serviced when possible.
The AHRS is not receiving any or any useful GPS information. Check AFMS limita-
tions. The G1000 system should be serviced.
The AHRS is not receiving backup GPS information. The G1000 system should be
serviced.
The AHRS is operating exclusively in no-GPS mode. The G1000 system should be
serviced.
The AHRS has incorrect software installed. The G1000 system should be serviced.
The AHRS is using a backup communications data path. The G1000 system should
be serviced when possible.
The AHRS earth magnetic field model is out of date.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.
Comments
A fault has occurred in the GMU 44. Heading is flagged as invalid. The AHRS uses
GPS for backup mode operation. The G1000 system should be serviced.
The GMU 44 has incorrect software installed. The G1000 system should be serviced.
Comments
GDL 69 configuration settings do not match those of backup configuration memory.
The G1000 system should be serviced.
A failure has been detected in the GDL 69. The receiver is unavailable. The G1000
system should be serviced
Garmin G1000 Cockpit Reference Guide for Cessna Nav III