Air Display Sir Alan CobhamOriginal vintage advertising poster for Sir Alan Cobham's Great Air Display featuring a fantastic image of three planes flying down with a photograph of Sir Alan Cobham and the information text below. The skilled English aviator and airline founder, Sir Alan John Cobham (1894 1973), was a pilot with the Royal Flying Corps Royal Air Force during World War One then a test pilot before setting up a series of aviation days consisting of a team of aircraft