Pilot's Guide
6-2
Garmin G600 Pilot’s Guide
190-00601-02 Rev. F
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.










