Certificate to mark the world air speed record, 1956.

This certificate of achievement, isued by the Federation aeronautique Internationale (FAI), was awarded to the British aviator, Peter Twis, to mark the breaking of the world air speed record on 10th March 1956. Twis, chief test pilot of Fairey Aviation, set the record at 1822 kmh (1132.13 mph) over Susex in the 'Fairey Delta 2' (FD2) research aircraft. The FD2 was a delta wing plane, powered by a Rolls-Royce engine. One was converted into the modified delta shape eventually used on Concorde.