Garmin G3X Pilot's Manual page 370

AFCS
GPS APPROACH WITH VERTICAL GUIDANCE
NOTE: To cancel Glidepath (GP) Mode without cancelling GPS Mode, press
the AP NAV Softkey once. Pressing it a second time cancels GPS Mode.
When Glidepath (GP) Mode is armed for a GPS approach with vertical guidance, GPS
Mode is automatically armed.
Selecting a GPS approach with vertical guidance:
1) EXTERNAL NAVIGATOR: Ensure a GPS approach with vertical guidance
(LPV, LNAV/VNAV, LNAV+V) is loaded into the active flight plan.
2) EXTERNAL NAVIGATOR: Ensure the 'GPS' indication is showing in the
lower-left corner
3) G3X: Ensure that GPS1 is the selected navigation source on the PFD or
PFD Page (use the CDI SRC Softkey to cycle through external navigation
sources if necessary).
4) EXTERNAL NAVIGATOR: Select and activate the GPS approach using the
PROC Key.
5) G3X: From the PFD or PFD Page, press the ALT/PTCH Softkey to access the
autopilot pitch modes and then press the AP APPR Softkey.
APR Key on the GMC 305
Or Press the
LOCALIZER WITH GLIDESLOPE
LOC Mode (lateral) and GS Mode (vertical) are both armed by pressing the ALT/
PTCH Softkey and then the AP APPR Softkey from the G3X PFD or by pressing the
APR Key on the GMC 305. LOC/ILS approach captures are inhibited if the difference
between aircraft heading and localizer course exceeds 105˚.
348
. If not, press the CDI Key.
Garmin G3X Pilot's Guide 190-01115-00 Rev. K