Sept. 26 (UPI) -- Aviation company ZeroAvia announced it has made the world's first flight of a commercial-grade aircraft powered by hydrogen fuel cells.
The company said it retrofitted a Piper M-class six-seat airplane with the fuel cell at its research and development facility in Cranfield, Britain. In a test flight Wednesday, the airplane off, completed a full pattern circuit, landed and taxied without the aid of fossil fuel.