What happened
During a night operation conducted in adverse weather conditions, a twin-engine aircraft struck the terrain on the slope of Mt Y Gamrhiw. The impact site is located near Llanwrthwl, Wales. The accident resulted in the deaths of four occupants, while one passenger sustained injuries.
The crew consisted of the pilot and three other military personnel serving as observer, wireless operator, and wireless operator/air gunner. All four deceased individuals were members of the 15th Operational Training Unit (OTU). No specific aircraft registration is provided in the available records for this incident.