What happened
The incident occurred while the aircraft was conducting a navigation exercise departing from RAF St Athan. During the flight, the crew was operating at a low altitude under conditions of reduced visibility. The twin-engine airplane subsequently impacted a hillside located north of Rhossili. The crash resulted in the loss of all four individuals on board, comprising the pilot and three other crew members.
Findings
The official investigation determined that the accident was caused by controlled flight into terrain. This conclusion highlights the critical interaction between low-level flight operations and limited visual conditions, which prevented the crew from avoiding the obstacle in time.