Garmin G3X Touch
™
Pilot’s Guide for Certified Aircraft
190-02472-00 Rev. D 321
AFCS
System
Overview
Flight
Instruments EIS
CNS
Interface
GPS
Navigation
Flight
Planning
Hazard
Avoidance
Additional
Features AFCS Annun/Alerts Appendix Index
NAVIGATION MODES (GPS, VOR, LOC, BC)
NOTE: When making a VOR or LOC approach, a valid GPS position is required.
NOTE: The selected navigation receiver must have a valid VOR or LOC signal
or active GPS course for the flight director to enter Navigation Mode.
NOTE: When intercepting a flight plan leg, the flight director gives com-
mands to capture the active leg at approximately a 45° angle to the track
between the waypoints defining the active leg. The flight director does not
give commands fly to the starting waypoint of the active leg.
NOTE: When making a backcourse approach, set the Selected Course to the
localizer front course.
Pressing the NAV Key or touching NAV on the G3X Touch selects Navigation Mode.
Navigation Mode acquires and tracks the selected navigation source (GPS, VOR, LOC).
The flight director follows GPS roll steering commands when GPS is the selected
navigation source. When the navigation source is VOR or LOC, the flight director
creates roll steering commands from the Selected Course and deviation. Navigation
Mode can also be used to fly non-precision GPS and LOC approaches where vertical
guidance is not required.
Backcourse Navigation Mode captures and tracks a localizer signal in the backcourse
direction. The annunciation ‘BC’ in the Autopilot Status Box indicates Backcourse
Navigation Mode.
If the Course Deviation Indicator (CDI) shows greater than one dot when the NAV
Key is pressed or NAV is touched, the selected mode is armed. If the CDI is less than
one dot, Navigation Mode is automatically captured when the NAV Key is pressed or
NAV is touched. The armed annunciation appears in white to the left of the active
roll mode.
Navigation Mode Annunciation
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