Cockpit Reference Guide
Garmin G1000 Cockpit Reference Guide for the Hawker Beechcraft C90A/GT/GTi
190-00664-02 Rev. B
78
Annunciations & Alerts
Flight
Instruments
Nav/Com/
XPDR/AudioAFCSGPS Nav
Flight
PlanningProcedures
Hazard
Avoidance
Additional
FeaturesAnnun/AlertsAppendixIndex
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.
AHRS2 GPS
– AHRS2 not receiving
backup GPS information.
The #2 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.
AHRS2 GPS
– AHRS2 operating
exclusively in no-GPS mode.
The #2 AHRS is operating exclusively in no-GPS
mode. The system should be serviced.










