Garmin G3X Pilot's Manual page 385

2) Arm LOC Approach and Glideslope modes.
a) EXTERNAL NAVIGATOR: Ensure the appropriate localizer frequency is
tuned.
b) GMC 305: Press the APR Key when cleared for approach to arm
Approach and Glideslope modes. 'LOC' and 'GS' appear in white as
armed mode annunciations.
Or: Press the AP APPR Softkey when cleared for approach to arm
Approach and Glideslope modes. 'LOC' and 'GS' appear in white as
armed mode annunciations.
c) The navigation source automatically switches to LOC. After this switch occurs,
the localizer signal can be captured and the flight director determines when to
begin the turn to intercept the final approach course. The flight director now
provides guidance to the missed approach point.
3) There are two options available at this point, as the autopilot flies the ILS
approach:
• Push the AP DISC Button at the decision height and land the aircraft.
• Use the TO/GA Button (GMC 305 only) to execute a missed approach and
apply TO/GA power.
• Push the AP DISC Button at the decision height to execute a missed
approach and apply go-around power.
190-01115-00 Rev. K Garmin G3X Pilot's Guide
AFCS
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