 motor was fitted and on 10 March 1912 Duigan, flying solo managed some long, straight flights in his too-evidently underpowered machine.Some intensive engine tuning, together with a new propeller resulted in more success that April, with solo circuits, figures of eight, and an hour-long series of circuits at about 500 ft (150 m).Nonetheless, Duigan won his Aviator's Certificate and returned to Australia.