What happened
During a scheduled test flight intended for a third Caribou unit destined for US Army service, an accident occurred near Udora, Ontario. While operating in the local airspace, the aircraft experienced a sudden loss of control. The plane entered a steep dive before impacting a field on the ground.
The impact resulted in the total destruction of the Caribou. Both members of the flight crew sustained serious injuries during the crash event.
Findings
Investigations into the accident suggest that the primary reason for the loss of control was a partial failure of the tail assembly.