Cockpit Reference Guide

Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
190-00384-12 Rev. A
13-23
SECTION 13 – ANNUNCIATIONS
& ALERTS
GTX 33 Message Advisories
Message Comments
XPDR1 CONFIG – XPDR1 config
error. Config service req’d.
The transponder configuration settings do not match those of backup configuration
memory. The system should be serviced.
MANIFEST – GTX1 software
mismatch, communication halted.
The transponder has incorrect software installed. The system should be serviced.
XPDR1 SRVC – XPDR1 needs
service. Return unit for repair.
The #1 transponder should be serviced when possible.
XPDR1 FAIL – XPDR1 is
inoperative.
There is no communication with the #1 transponder.
GRS 77 Message Advisories
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.
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.
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.
AHRS1 GPS – AHRS1 not receiving
backup GPS information.
The #1 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.
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The #1 AHRS earth magnetic field model is out of date.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.
GEO LIMITS – AHRS1 too far
North/South, no magnetic compass.
The aircraft is outside geographical limits for approved AHRS operation. Heading is
flagged as invalid.
MANIFEST – GRS1 software
mismatch, communication halted.
The #1 AHRS has incorrect software installed. The system should be serviced.