The Heinkel He 178 Makes the First Turbojet-Powered Flight
CONFIRMED85% CONFIDENCEHappened as dated, per en.wikipedia.org[1]: "On 27 August 1939, the He 178 V1, the first prototype, performed its maiden flight, piloted by Erich Warsitz."
Erich Warsitz flew the He 178 V1 for six minutes from Heinkel’s Marienehe factory airfield at Rostock, the first aircraft ever to fly on the thrust of a turbojet. The undercarriage would not retract and the landing was made by side-slipping.
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