Airspeed Oxford
The Airspeed Oxford was a British twin-engine advanced trainer built by Airspeed Limited, developed from the company's Envoy airliner to Air Ministry Specification T.23/36. First flown on 19 June 1937, it became the Royal Air Force's first twin-engine monoplane advanced trainer and trained Commonwealth aircrews throughout the Second World War. Production is usually given as 8,751 aircraft, although the manufacturers' figures sum to 8,586 — a difference attributed to a cancelled Percival order. Oxfords also served as air ambulances, communications aircraft and radar calibration aircraft; the RAF withdrew its last in 1956, and 152 surplus aircraft were converted into the civil AS.65 Consul.