On final approach to runway 29, the crew attempted to drop the load that jammed on the rear ramp. The aircraft banked left, causing the left wing to hit the ground. The aircraft went out of control and crashed. All seven crew members (six Canadians and one American) were killed.
Probable cause (official findings): During a LAPES drop mission, the load got hung up, catastrophically changing the CofG to a point at which it was impossible to recover the aircraft.