Royal Air Force Coningsby or RAF Coningsby (IATA: QCY, ICAO: EGXC), is a Royal Air Force station 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 three front-line Eurofighter Typhoon FGR4 units, No. 3 Squadron, No. 11 Squadron and No. 12 Squadron. In support of front-line units, No. 29 Squadron is the Typhoon Operational Conversion Unit and No.