1679 Heavy Conversion Unit, RAF Wombleton. The crew of Lancaster aircraft DS 839 were engaged in a daylight cross-country training exercise when they crashed at Ridgemont, Bedfordshire, England. Accident investigators couldn't establish the cause of the crash, mainly due to the level of destruction of the aircraft, but icing conditions were believed to have been a factor in the crash
Flight Sergeant F W MacDonald (RCAF), Flight Sergeant J J Farrell (RCAF), Flight Sergeant L I Hogan (RCAF), Flying Officer R W Grosser (RCAF), Sergeant S A Carr (RCAF), Sergeant L Thompson (RAFVR) and 1st Lieutenant R M Grove (USAAF) were all killed in this flying accident