56 G500 Cockpit Reference Guide
190-01102-03 Rev B
ALERTS
ALERTS
Alerts
NOTE: Contact your Garmin dealer for service if any of the following
alerts appear.
On Screen Alerts
Alert Description
AHRS1 GPS
AHRS 1 not receiving any GPS information.
AHRS 1 is operating exclusively in no-GPS mode.
AHRS 1 is using the backup GPS information.
AHRS1 SRVC
AHRS1 magnetic fi eld model needs update. This appears on
the ground only.
AHRS1 TAS AHRS is not receiving true airspeed from ADC.
CAL LOST Registry reports that the GDU 620 has lost calibration data.
CHECK ATTITUDE
The GDU 620 attitude monitors have detected an AHRS
malfunction, or the inability to actively monitor the AHRS
output. The autopilot will automatically disconnect. This
alert will display on the PFD and only appears with the
installation of an optional GAD 43 Adapter.
CNFG MISMATCH GDU 1-2 airframe confi guration settings disagree.
CNFG MODULE Failure of confi guration module.
DATA LOST Pilot stored data was lost. Recheck data and settings.
DIAG MODE System is in Diagnostic Mode.
FAN 1/2 FAIL
Cooling fan #1 or #2 has failed.
GAD 43 Gyro Emulation Type Mismatch Fault
Yaw Rate Scale Factor Mismatch Fault
GDU AHRS Monitor Fault
Pitch Deviation Fault
Roll Deviation Fault
Yaw Rate Deviation Fault
AHRS A429 Attitude Timeout Fault
AHRS A429 Attitude Invalid Fault
AHRS Pitch Out of Range Fault
