De Havilland DH.37

The de Havilland DH.37 was a British three-seat sporting biplane of the 1920s, designed and built by de Havilland for the aviator Alan Samuel Butler. It was powered by a 275 hp Rolls-Royce Falcon III water-cooled V12 engine and was a small aircraft with a wingspan of 37 feet. The first example was named Sylvia for Butler's sister and flew extensively for five years before being converted to a single-seater and having its engine upgraded to a 300 hp A.D.C. Nimbus; it crashed in June 1927. The second aircraft was sold to Australia and flown by the Controller of Civil Aviation, and was later sold to the Guinea Gold Company in New Guinea, where it was the first aircraft flown in that country. After a forced landing at Wau aerodrome in December 1937 it was put out of commission.