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Garmin G1000 Cockpit Reference Guide for the Mooney M20M & M20R
12-12
SECTION 12 – ANNUNCIATIONS
& ALERTS
GTX 33 Message Advisories
Alerts Window Message Comments
XPDR1 CONFIG – XPDR1 config error.
Config service req’d.
The transponder configuration settings do not match those of backup configuration
memory. The G1000 system should be serviced.
MANIFEST – GTX1 software mismatch.
Communication halted.
The transponder has incorrect software installed. The G1000 system should be
serviced.
BACKUP PATH – Transponder using
backup data path.
The transponder is using a backup communications path. The G1000 system should
be serviced when possible.
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 GPS – AHRS 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 GPS – AHRS 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 GPS – AHRS not receiving
backup GPS information.
The AHRS is not receiving backup GPS information. The G1000 system should be
serviced.
AHRS GPS – AHRS 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 PATH – AHRS using backup
data path.
The AHRS is using a backup communications data path. The G1000 system should
be serviced when possible.
AHRS SERVICE – AHRS Magnetic-field
model needs update.
The AHRS earth magnetic field model is out of date. Update magnetic field model
when practical.
GEO LIMITS – Too far North/South, no
magnetic compass.
The aircraft is outside geographical limits for approved AHRS operation. Heading is
flagged as invalid.