This episode begins with Rolls-Royce’s head of aero engines, talking about the gas turbine engines of the 1950s, including the Rolls-Royce Tyne, before Raymond Baxter asks Sir George Edwards of Vickers about the turboprop generation of aircraft. The episode concludes with Gp. Capt. John Cunningham on test flying the de Havilland Comet series of aircraft.

This is the fifth episode of Powered Flight, the British contribution to flying. It was a BBC Overseas Service documentary first broadcast in 1959 and was introduced by Charles Gibbs-Smith. The recording was supplied by the BBC/Getty images, was edited by Mike Stanberry FRAeS and was digitised and released thanks to a grant from the Royal Aeronautical Society Foundation and a bequest from E. H. J. Pallett.