At 16:10:24 (114 seconds), the leading-edge devices were selected to be retracted at a height above the ground of and a speed of , below the safe droop flap retraction speed of . One second afterwards, visual and audible warnings of a stall activated on the flight deck, followed at 16:10:26 (116 seconds) by a stick shake and at 16:10:27 (117 seconds) by a stick push which disconnected the autopilot, in turn activating a loud autopilot disconnect warning horn that continued to sound for the remainder of the flight. Key levelled the wings but held the aircraft's nose up, which kept the angle of attack high, further approaching a stall.