FAA Approved AFMS or Supplemental AFM for the Garmin G3X Touch EFIS
190-01754-01 Rev. 4
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3.10 Heading Failure, Loss of Magnetometer Data, or Magnetic Field
Error
A heading failure, loss of magnetometer data, or magnetic field error is indicated by removal of the
digital heading readout, a red X, and a Amber
“HDG” on the display
.
1. Use standby magnetic compass.
NOTE:
If the G3X Touch DG/HSI has a valid GPS signal the G3X Touch DG/HSI instrument
will display the GPS track information in magenta.
3.11 PFD Failure
PFD failure is indicated by the loss of displayed information on the PFD, including a blank, frozen, or
unresponsive display.
1. Use standby flight instruments for attitude, airspeed, altitude, and heading reference.
2. Refer directly to the navigation source for navigation information (such as GPS).
3. If autopilot is engaged, verify autopilot mode and cross check against standby flight and
navigation data.
3.12 Navigation Data Failure (GPS/VOR/LOC/GS)
Navigation data failure may be indicated by any or all of the following:
•
Loss of course deviation information on PFD
•
Loss of glideslope/glidepath information on PFD
•
Loss of bearing pointer on HSI
1. Select alternate navigation source or refer directly to external navigation data.
If No Alternate Navigation Sources Are Available
and ‘REV’ is Displayed on HSI:
1. Use the CDI for course information.
2. Fly toward known visual conditions.
NOTE
In the event that all configured external GPS navigators fail, the G3X Touch reverts to
its internal VFR GPS for navigation and flight plan modifications.
