Airspeed Courier

The Airspeed AS.5 Courier was a British six-seat single-engined light aircraft that was designed and produced by the British aircraft manufacturer Airspeed Limited at Portsmouth. It has the distinction of being the first British aircraft fitted with a retractable undercarriage to go into quantity production.

Initial development work on the Courier started in 1931, being envisioned as an advanced aircraft intended primarily for private owner-pilots. Its ambitious design, including its unorthodox undercarriage, attracted the attention of the British aviation pioneer, Sir Alan Cobham, who saw it as a suitable aircraft for demonstrating his airborne refuelling techniques for long distances flights. Following the order's confirmation in August 1932, a single prototype was constructed, performing its maiden flight on 10 April 1933.

The Courier quickly proved itself to be a sound design as well as capable of laudable performance, encouraging Airspeed to commence quantity production months later. The Courier was primarily purchased by civilian customers, being used as an early airliner, racing aircraft and flying testbed. It was also used as a communications aircraft by the Royal Air Force during the Second World War. Only a single aircraft flew briefly in the postwar era.