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Tokyo Imperial University Aeronautical Research Institute Kokenki
The aviation laboratory of the Tokyo Imperial University immediately became a mecca for Japanese students of aeronautics. Among its foremost achievements was the Kokenki, an experimental long-range monoplane that employed a domestically built airframe and a revamped version of a German engine. The plane flew over the Kanto Plain region, which includes Tokyo and its neighbouring prefectures, for 62 hours non-stop after taking off on May 13, 1938. The flight translated into a cruising distance of 10,651.01 km, a world record at the time and still Japan’s only aviation record certified by the International Aeronautical Federation.

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