In 1909, after attended an international airshow in Frankfurt am Main, he determined flight was the future of transportation, and the following year, he built his first aircraft.
Working from a set of plans by Henri Farman, Heinkel’s aircraft was originally powered by a modified marine engine, but first flew his biplane at Cannstatter Wasen near Stuttgart in July, 1911, with a 50 hp engine on loan from DMG (Daimler). Heinkel crashed the plane and suffered severe injuries on 19 July, 1911.
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