During flight at 10,000 feet above ground level, the engine began to vibrate and run rough. Shortly thereafter, a loud bang occurred and oil was present on the windscreen. The pilot attempted a forced landing, and during the forced landing, the airplane landed short of the runway and impacted a ditch.
Surviving skydivers said that as the airplane was climbing to the jump altitude of 10,500 feet agl, the stall warning horn sounded intermittently several times. They paid no particular attention to it because they had heard it on previous flights. When the airplane reached the jump altitude, the pilot signaled for one of the parachutists to open the door. When she did, she told the pilot that the airplane had overshot the drop zone by approximately 1 mile.