Garmin Software Version 0370.13 User's Guide Page 88

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Garmin G1000 Cockpit Reference Guide for the DA42
12-14
SECTION 12 – ANNUNCIATIONS
& ALERTS
GRS 77 Message Advisories
Alerts Window Message Comments
AHRS TAS
AHRS not receiving
airspeed.
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.
AHRS GPSAHRS using backup GPS
source.
The AHRS is using the backup GPS path. Primary GPS path has failed. The G1000
system should be serviced when possible.
AHRS GPSAHRS not receiving GPS
information.
The AHRS is not receiving any or any useful GPS information. Check AFMS limita-
tions. The G1000 system should be serviced.
AHRS GPSAHRS not receiving
backup GPS information.
The AHRS is not receiving backup GPS information. The G1000 system should be
serviced.
AHRS GPSAHRS operating
exclusively in no-GPS mode.
The AHRS is operating exclusively in no-GPS mode. The G1000 system should be
serviced.
MANIFEST – GRS1 software mismatch.
Communication halted.
The AHRS has incorrect software installed. The G1000 system should be serviced.
BACKUP PATHAHRS using backup
data path.
The AHRS is using a backup communications data path. The G1000 system should
be serviced when possible.
AHRS SERVICEAHRS Magnetic-field
model needs update.
The AHRS earth magnetic field model is out of date. Update magnetic field model
when practical.
GEO LIMITSToo far North/South, no
magnetic compass.
The aircraft is outside geographical limits for approved AHRS operation. Heading is
flagged as invalid.
GMU 44 Message Advisories
Alerts Window Message Comments
HDG FAULTA magnetometer fault
has occurred.
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.
MANIFEST – GMU1 software
mismatch. Communication halted.
The GMU 44 has incorrect software installed. The G1000 system should be serviced.
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