Approaches Without Vertical Guidance - Garmin G3X Touch Pilot's Manual

AFCS
5) G3X Touch: From the PFD, touch the autopilot and touch NAV.
Or: Press the NAV Key on the GMC 305.
If there is less than half-scale deviation when NAV is touched or the NAV Key is
pressed, VOR Mode will activate (green text), intercept, and track the selected radial.
If there is more than half-scale deviation when NAV is touched, VOR Mode will arm
(white text) first, then activate when closer to the radial.

APPROACHES WITHOUT VERTICAL GUIDANCE

NOTE: The selected navigation receiver must have a valid VOR or LOC signal
or active GPS course for the flight director to enter Approach Mode.
NOTE: For the autopilot to enter a VLOC mode, the G3X Touch must have GPS
reception, a valid navigation database, and the external navigation receiver
must have a valid signal (VOR or LOC).
Touch NAV or press the NAV Key (GMC 305) to arm/activate VOR, LOC/BC,
and GPS (LNAV only) lateral modes. Lateral modes acquire and track the selected
navigation source (GPS, VOR, or LOC), depending on the loaded approach. These
modes use the selected navigation receiver deviation and desired course inputs to fly
the approach. Touch NAV when the CDI is greater than one dot to arm the selected
modes (annunciated in white). Touch NAV when the CDI deviation is less than one
dot to activate, capture and track the selected navigation source (GPS, VOR, or LOC).
Example Control
LNAV
NAV
VOR
Key
(GMC
LOC
305)
or
NAV
BC
246
Lateral Mode
Approach, GPS
VOR Approach
Capture/Track
LOC Capture/Track
(No Glideslope)
Backcourse
Capture/Track
Approaches without Vertical Guidance
Garmin G3X Touch Pilot's Guide
Annunciation
GPS
Captures and tracks
VOR
the selected navigation
source (GPS, VOR, LOC)
LOC
Captures and tracks
BC a localizer signal for
backcourse approaches
Description
190-01754-00 Rev. A