65G500H Cockpit Reference Guide190-01150-03 Rev FALERTS ALERTSAlertsNOTE: Contact your Garmin dealer for service if any of the followingalerts appear.On Screen AlertsAlert DescriptionADC1 ALT EC ADC Altitude Error Correction is unavailable.GDC is reporting that altitude correction is unavailable.AHRS1 GPSAHRS 1 or AHRS 2 is not receiving any GPS information.AHRS 1 or AHRS 2 is operating exclusively in no-GPS mode.AHRS 1 or AHRS 2 is using the backup GPS information.AHRS1/2 SRVC AHRS1 or AHRS 2 magnetic field model needs update. Thisappears on the ground only.AHRS1/2 TAS AHRS1 or AHRS 2 is not receiving true airspeed from ADC.ALT KEY INOP The ALT key is disabled.ALT NO COMP No data from on or more altitude sensors.ARINC 429 CONFIG ARINC 429 configuration error.ARINC 708 CONFIG ARINC 708 configuration error.AUD NOT AVAIL Audio system is not available.AUD SYS FAIL Audio system has failed.CAL LOST Registry reports that the GDU 620 has lost calibration data.CNFG MISMATCH GDU 1-2 airframe configuration settings disagree.CNFG MODULE Failure of configuration module.
