When ZeroAvia’s six-seater aircraft completed an eight-minute flight from Cranfield Airfield in the U.K. last September, the company claimed a “major breakthrough” with the first-ever hydrogen fuel cell flight of a commercial-size aircraft. The modified Piper Malibu propeller plane was now the largest hydrogen-powered aircraft in the world, wrote the company. “While some experimental aircraft … Continue reading ZeroAvia’s hydrogen fuel cell plane ambitions clouded by technical challenges