Garmin G3X Pilot’s Guide
190-01115-00 Rev. K
377
Annunciations & Alerts
System
Overview
Flight
Instruments
EIS
CNS
Interface
GPS
Navigation
Flight
Planning
Hazar
d
Avoidance
Additional
Featur
es
AFCS
Annun/Alerts
Appendix
Index
10.4 PFD ANNUNCIATIONS AND ALERTING
FUNCTIONS
The following annunciations and alerting functions are displayed on the PFD.
UNCERTAIN HEADING
If the G3X senses that the magnetic heading measurement is valid, but possibly
outside of the internal accuracy limits, the numeric heading value on the PFD is display
in yellow. When the system heading is uncertain, features that use heading data may
not be available (e.g., autopilot HDG mode or PFD wind calculations). An uncertain
heading value can be caused by magnetic anomalies or installation/calibration issues.
Refer to the G3X installation manual for installation and calibration information for
the magnetometer
Uncertain Heading
EXTERNAL NAVIGATOR MESSAGES (OPTIONAL)
When an external navigator has a pending message, a yellow ‘MSG’ annunciation
will appear in the bottom left quadrant of the HSI.
External Navigator Messages (HSI)
External
Navigator
Message
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