Description
In October 1940, the D-3801 prototype flew in Switzerland with a more powerful 790 kW HS 12Y-51 engine, different exhausts and a fixed radiator. 207 aircraft were built in 1940-1941 and the last 17 were assembled from spare parts in 1948. In 1943, the D-3800s were modernized to the D-3801. They flew in Switzerland until May 1959.
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