The airplane departed on a parachute jump flight with the airline transport pilot seated in the rear cockpit
and two parachutists standing outside on the lower wing. About 200 ft above ground level, the pilot
sensed a loss of engine power and the airplane stopped climbing. The airplane descended, and the pilot
conducted an off-airport forced landing to a flat, open, muddy field about 1,600 ft north of the airport,
during which the main landing gear separated from the airframe. A postaccident examination of the
airplane revealed no anomalies. Review of weather information for the area at the time of the accident
indicated that conditions were conducive to the accumulation of serious icing at glide power settings;
however, the airplane was operating at takeoff power at the time of the accident, and the reason for the
loss of engine power could not be determined.