Pilot's Guide

6-2
Garmin G500 Pilot’s Guide
190-01102-02 Rev. E
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
Alert Message Description Action
AHRS1 GPS • AHRS1/2 not receiving
any GPS information.
• AHRS1/2 operating
exclusively in no-GPS
reversionary mode.
• AHRS1/2 using backup
GPS source.
• AHRS1/2 not
receiving backup GPS
information.
• Two GPS devices are
configured as present
and AHRS1 is not
receiving GPS data
from the backup (2nd)
device.
• Verify navigators are on and
have a GPS signal and are not in
self-test mode.
• Check AFMS for limitations.
• Contact your Garmin dealer for
service.
AHRS1/2 SRVC • AHRS1/2 magnetic-
field model needs
update.
• Appears on ground
only.
• AHRS magnetic field model
should be upgraded.
• Contact your Garmin dealer for
service.
AHRS1/2 TAS • AHRS1/2 not receiving
true airspeed from
ADC.
• Displayed heading and
attitude data is still
valid.
• Additional loss of GPS
data will cause loss of
heading and attitude
data.
• Check ADC cable.
• Contact your Garmin dealer for
service.
ALT KEY INOP • The ALT key is
disabled.
• ALT key is not available.