Garmin G3X Pilot's Manual page 90

System Overview
6) With 'Done' highlighted press the ENT Key.
Restoring airport criteria defaults:
1) Press the NRST Key.
2) Turn the FMS Joystick to select the Nearest Airports Page.
3) Press the MENU Key to display the Page Menu.
4) Turn or move the FMS Joystick to select 'Set Airport Criteria', and then
press the ENT Key. A window appears with the current settings.
5) Press the MENU Key.
6) With 'Restore Default' highlighted press the ENT Key.
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Airport Criteria Window
Garmin G3X Pilot's Guide 190-01115-00 Rev. K