Garmin G500 Manual - Page 27

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Garmin G500 Manual
3.2

Abnormal Procedures

3.2.1 Heading Failure
Heading failure is indicated by replacement of the digital heading display with
amber "HDG" text and a red X.
If valid GPS ground track is available, it will automatically be displayed in place
of heading. The HSI heading bug and course pointer will continue to function
normally, using GPS ground track as a reference instead of magnetic heading.
If GPS track is not available:
1.
Use standby compass for heading reference.
Verify selected course using "CRS" button and PFD knob.
2.
No directional references will be displayed on HSI. The
heading bug will be removed, and the course pointer will
remain fixed at the top of the HSI regardless of aircraft
heading. Course deviation indications will behave similar to a
traditional CDI. VOR deviations will be relative the selected
course with a TO/FROM indication. Localizer deviations will
not be affected by the selected course, and reverse sensing will
occur when tracking inbound on a localizer back course.
AFMS, GARMIN G500 PFD/MFD SYSTEM
FAA APPROVED
CAUTION
190-01102-01 Rev. 9
Page 27 of 40