The following submission statement was provided by /u/DisasterousGiraffe:

ZeroAvia's flight is part of the UK Government-backed HyFlyer II project, which aims to develop a 600kW powertrain to allow zero-emissions flight for 9-19 seater aircraft, and is targeting a 300 nautical mile range. The flight was conducted under a full Part 21 flight permit with the UK Civil Aviation Authority.

The company aims to be serving commercial flights with the technology by 2025. It also aims to scale up the technology to larger 90-seater aircraft, with "further expansion" into narrowbodies in the next decade, they said in a statement. By 2027, they aim to be able to power a 700-mile flight in a 40-80 seater aircraft.

Please reply to OP's comment here: https://old.reddit.com/r/Futurology/comments/10h038z/successful_test_flight_of_hydrogenelectric/j55m10m/