Royal Air Force Coningsby or RAF Coningsby (IATA: QCY, ICAO: EGXC), is a Royal Air Force (RAF) station located at located 13.7 kilometres (8.5 mi) south west of Horncastle, and 15.8 kilometres (9.8 mi) north west of Boston, in the East Lindsey district of Lincolnshire, England. It is a Main Operating Base of the RAF and home to the Typhoon Force Headquarters and two front-line Eurofighter Typhoon FGR4 units, No. 3 Squadron & No. 11 Squadron. In support of frontline units, No. 29 Squadron is the Typhoon Operational Conversion Unit and No. 41 Squadron is the Typhoon Operational Evaluation Unit. Coningsby is also the home of the Battle of Britain Memorial Flight (BBMF) which operates a variety of historic RAF aircraft.