F-35 Test Pilot Dave Nelson talks about intentional departure and recovering from stalls during F-35A high angle of attack testing at Edwards Air Force Base, Calif. Flight Test Engineer Lea Haubelt explains how the tests help define the F-35 flight control software. The testing accomplished high AOA beyond both the positive and negative maximum command limits, including intentionally putting the aircraft out of control in several configurations. This included initially flying in the stealth clean wing configuration. It was followed by testing with external air-to-air pylons and missiles and then with open weapon bay doors. For all testing, recovery from out of control flight has been 100 per cent successful without the use of the spin recovery chute, which is carried to maximise safety.