Garmin G3X Pilots Guide - Page 288

Overview System Integrated Autopilot 5) G3X: From the PFD or PFD Page, press the HDG/ROLL Softkey to access the autopilot lateral modes and then press the AP NAV Softkey. If there is less than half-scale deviation when the AP NAV Softkey is pressed, VOR Mode will activate (green text), intercept, and track the selected radial. If there is more than half-scale deviation when the AP NAV Softkey is pressed, VOR Mode will arm (white text) first, then activate when closer to the radial. Instruments Flight EIS CNS Interface GPS Navigation Flight Planning Hazard Avoidance Additional Features Navigation Softkeys APPROACHES WITHOUT VERTICAL GUIDANCE NOTE: For the autopilot to enter a VLOC mode, the G3X must have GPS reception, a valid navigation database, and the external navigation receiver must have a valid signal (VOR or LOC). Press the AP NAV Softkey 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. Press the AP NAV Softkey when the CDI is greater than one dot to arm the selected modes (annunciated in white). Press the AP NAV Softkey when the CDI deviation is less than one dot to activate, capture and track the selected navigation source (GPS, VOR, or LOC). Example Control Lateral Mode Annunciation Description LNAV Approach, GPS GPS VOR VOR Approach Capture/Track VOR Captures and tracks the selected navigation LOC AP NAV LOC Capture/Track Softkey (No Glideslope) LOC source (GPS, VOR, LOC) BC Backcourse Capture/Track Captures and tracks BC a localizer signal for backcourse approaches Approaches without Vertical Guidance 270 Garmin G3X Pilot's Guide 190-01115-00 Rev. F Integrated Autopilot Annun/Alerts Appendix Index