Page "Focke-Wulf" Paragraph 3
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Hanna Reitsch demonstrated the Focke-Wulf Fw 61, the first fully controllable helicopter ( as opposed to autogyro ), in Berlin in 1938.
The Fw 200 flew nonstop between Berlin and New York City on August 10, 1938, making the journey in 24 hours and 56 minutes.
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1.836 seconds.