What happened
The incident occurred during a night training exercise conducted for the 206th Squadron. While cruising in the vicinity of the Flamborough coast, the twin-engine aircraft lost control and subsequently crashed into the North Sea. The accident resulted in the death of all four individuals on board. The crew consisted of a pilot, an observer, and two aircrew members.
Findings
The source material does not provide specific details regarding the mechanical or environmental factors that led to the loss of control. It only confirms that the aircraft went out of control during the cruise phase of the training flight.