
Garmin G1000 Cockpit Reference Guide for the Piper PA-34-220T Seneca
190-01405-00 Rev. A 101
Annunciations & Alerts
Flight
Instruments EIS
Nav/Com/
XPDR/Audio GPS Nav
Flight
Planning Procedures
Hazard
Avoidance
Additional
Features
Abnormal
Operation Annun/Alerts Appendix Index
GTX 33 & 33 W/ES MESSAGE ADVISORIES (CONT.)
Message Comments
XPDR1 FAIL
– XPDR1 is
inoperative.
There is no communication with the #1
transponder.
XPDR1 ADS-B FAIL
– XPDR1
unable to transmit ADS-B messages.
GTX 33 w/ES only. ADS-B is inoperative. The
transponder may not be receiving a valid GPS
position. Other transponder functions may be
available. Service when possible.
GRS 77 MESSAGE ADVISORIES
Message Comments
AHRS1 TAS
– AHRS1 not receiving
valid 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.
AHRS2 TAS
– AHRS2 not receiving
valid airspeed.
The #2 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.
AHRS2 GPS
– AHRS2 using backup
GPS source.
The #2 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.
AHRS2 GPS
– AHRS2 not receiving
any GPS information.
The #2 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.
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