In 1912 A. V. Roe and Company built a shoulder-wing monoplane to the
designs of Lt. Burga of the Peruvian Navy, who wished to tryout some highly original ideas on aircraft control. The machine was constructed at Brownsfield Mills at the same time as the Avto Type E ptototype and used the same tail and undercarriage, but the fuselage was much slimmer and the engine a 50hp Gnome rotary. It is probable that the Burga monoplane was, in fact, the Avro 502 of which no details survive except that it was a single seat monoplane.
Rectangular monoplane wings were wire braced to strong points on the
undercarriage and to a pylon built above the fuselage. There was no wing
warping, lateral control being obtained by two "rudders", one above and one below the fuselage, working in opposite directions. The design made provisions for wings of varying camber which fitted at varying angles of incidence to give the machine any desired performance.
Lt. Burga took a shed at Shoreham where the machine was test flown on
November 20, 1912 by H. R. Simms. The mainplanes fitted wete those
best suited for maximum speed and the pilot reported that it was certainly
fast and had a good tate of climb. Further taxying trials were made by H. S.
Powell in the following month, and in Januaty 1913 the Burga monoplane
returned to the Avro works at Manchester for modification.