De Havilland DH.50

The de Havilland DH.50 was a large single-engined British biplane transport of the 1920s, built by de Havilland at Stag Lane Aerodrome in Edgware and licence-built in Australia, Belgium and Czechoslovakia. In the early 1920s Geoffrey de Havilland expected that war-surplus aircraft would need replacing, so the company designed a four-passenger-cabin biplane using experience gained with the earlier DH.9. The first DH.50, registered G-EBFN, flew in August 1923 and was used within days by Alan Cobham to win a prize for reliability during trial flights between Copenhagen and Gothenburg. Only 17 aircraft were built by de Havilland and the rest were produced under licence, with a wide variety of engine fits. SABCA built three Puma-engined DH.50As in Brussels for SABENA on routes in the Belgian Congo, and Aero built seven in Prague.