Navigation Data Failure (Gps/Vor/Loc/Gs) - Garmin G3X TOUCH Single 7 Manual

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 an alternate navigation source on the external navigator's CDI Key.
Or
2. Use the internal GPS navigator in G3X by changing FPL Source from External to Internal on
the PFD. When the external GPS navigation source has failed, an amber REV and amber VFR
annunciation are displayed on the HSI. When REV and VFR are annunciated, IFR operations
are prohibited based solely on guidance provided by G3X Touch. Refer to Limitations, Section
2.3, Navigation Systems for IFR Operations for VFR operations using the G3X Touch internal
navigator.
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.
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.
190-01754-01 Rev. 5
FAA Approved
NOTE
AFMS or Supplemental AFM for the Garmin G3X Touch EFIS
P a g e | 3-5