Failsafe¶
The Failsafe tab configures what the aircraft does when radio link is lost: which stage(s) to trigger, throttle/surface behavior during failsafe, and (if GPS is fitted) whether to trigger GPS Rescue.
Configure and bench-test failsafe behavior before flying -- turn off your transmitter at a safe distance from the aircraft (props off) and confirm the flight controller actually enters failsafe and behaves the way you configured it here.
See also: GPS Rescue.