In a major step toward emission-free aviation, a hydrogen-powered electric helicopter has completed the world’s first manned closed-circuit flight in Canada, demonstrating the viability of green hydrogen technology for future air transport.
The milestone was achieved by Unither Bioélectronique on April 10, 2026, at Roland-Désourdy Airport in Bromont, Quebec. The aircraft successfully carried out a full flight sequence, including takeoff, climb, circuit and landing, using green hydrogen with zero emissions, Click Petroleo Gas reported.
The helicopter, a modified Robinson R44, was redesigned with an electric propulsion system powered by proton exchange membrane (PEM) fuel cells. Test pilot Ric Webb conducted the demonstration under an experimental license as part of efforts to validate the technology in real-world conditions.
Engineers replaced the original engine with a system that includes two low-temperature PEM fuel cells, a magniX electric motor and an auxiliary lithium-ion battery. A hydrogen storage tank was installed beneath the tail, while additional cooling units were fitted to support the new electric architecture.
According to Canadian Advanced Air Mobility, the flight marks a turning point, showing that hydrogen-powered aviation is moving from concept to practical application. Its executive director JR Hammond said the technology is already being tested for use in healthcare, emergency response and regional logistics.
The test also confirmed that PEM fuel cell systems can meet the high energy demands of vertical takeoff and landing operations. The helicopter used locally sourced green hydrogen throughout the flight.
The project is aimed at supporting medical logistics, particularly the rapid transport of manufactured organ alternatives. Mikaël Cardinal said the successful flight proves that hydrogen-electric vertical flight is possible under real conditions and can be scaled for wider use.
The initiative is part of Project Proticity, launched in 2024 by Unither Bioélectronique in partnership with Robinson Helicopter Company. The project seeks to adapt existing helicopter platforms such as the R44 and R66 for zero-emission operations.
Data from the test will support future certification efforts with aviation authorities in Canada and the United States, as developers work to expand the technology for longer-range missions, emergency services and regional transport.
