Pilot's Guide
6-9190-00601-02 Rev. H
Garmin G500/600 Pilot’s Guide
CoverTOC
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
Glossary Appendix A
Appendix B
Index
Alert Message Description Action
HDG FAULT • AHRS1/2 in
no-magnetometer
reversionary mode.
• Heading fault state
on AHRS.
• Heading data is
unreliable.
• Check AFMS for limitations.
• Use Compass or other course
information.
• Contact your Garmin dealer for
service.
HDG LOST • HDG features
disabled or defaulted
to GPS1 TRK.
• GDU is in the
reversionary track-
based mode.
HTAWS • External HTAWS not
available. Internal
TERRAIN-HSVT
alerting enabled.
• External HTAWS
configuration
mismatch.
• Contact your Garmin dealer for
service.
IAS NO COMP • No data from one
or more airspeed
sensors.
• Contact your Garmin dealer for
service.
<LRU> CONFIG • Error in the
configuration of a
specific LRU, where
<LRU> denotes a
specific LRU, such as
GDL69 or GWX.
• Config service required. Contact
your Garmin dealer for service.










