As the engine separated Forming_relationships from the aircraft , it severed Destroying hydraulic fluid lines that lock the wing 's leading-edge slats in place and damaged Damaging a section of the left Departing wing 's leading edge .

Aerodynamic forces Causation acting on the wing resulted in Causation an uncommanded retraction of the outboard slats .

As the aircraft began Process_start to climb , the damaged Damaging left Departing wing – with no engine – produced Manufacturing far less lift ( stalled ) than the right wing , with its slats still deployed Arranging and its engine providing full takeoff thrust .