No. 617 Squadron RAF No. 617 Squadron RAF Number 617 Squadron is a Royal Air Force aircraft squadron, based at RAF Marham in Norfolk. It is commonly known as the "Dambusters", for its actions during Operation Chastise against German dams during the Second World War. In the early 21st century it operated the Tornado GR4 in the ground attack and reconnaissance role until being disbanded in the spring of 2014. The squadron reformed on 17 April 2018, and was equipped at RAF Marham during summer 2018 with the F-35 Lightning II, becoming the UK's first squadron with this advanced V/STOL type. According to the
RAF Woodhall Spa RAF Bourn in 1943 leaving behind 3 crews. 619 Squadron were formed here on 18 April 1943. They moved to RAF Coningsby on 1 January 1944. 617 Squadron who arrived with 34 Avro Lancasters and 2 de Havilland Mosquitoes, the latter being used for low level target marking. 617 Squadron remained here until the end of hostilities and pioneered the use of the Tallboy and Grand Slam bombs from the airfield. 627 Squadron The low level target marking that had been developed by 617 Squadron was so successful that 627 Squadron, a Mosquito unit in No. 8 (PFF) Group, was