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HY4 Passenger Plane Sets Hydrogen Altitude Record

German aerospace company H2FLY has a new world altitude record with its four-seat HY4, which became the first hydrogen-powered passenger aircraft to reach an altitude above 7,000 ft (approx. 2,135 m) – less than a day after the HY4 made the first European flight in a hydrogen-powered passenger aircraft from one major airport to another when it traveled from Stuttgart to Friedrichshafen.

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