Unither Bioélectronique, a subsidiary of United Therapeutics Corporation, achieved a major milestone by successfully conducting the first piloted flight of a hydrogen-powered helicopter. The flight, utilizing Unither Bioélectronique's Robinson R44 Raven II equipped with a Proton Exchange Membrane (PEM) hydrogen fuel cell technology, demonstrated the capability of hydrogen to meet the demanding power requirements of VTOL aircraft. This groundbreaking test flight, which took place in Quebec's Roland-Désourdy Airport, validated the energy efficiency of the hydrogen fuel cells, with around 90% of the flight's energy being derived from this technology. The project, named Project Proticity, is a joint effort between Unither Bioélectronique and the Robinson Helicopter Company to propel the development of zero-emissions helicopters. The successful flight marks a significant advancement in the aviation industry towards long-range, zero-emission vertical flight. The next phase of the project will focus on integrating a liquid hydrogen storage system to enhance the helicopter's range capabilities and facilitate the use of the larger R66 helicopter model. Unither Bioélectronique envisions using these hydrogen-powered helicopters for 'extended-range' missions, particularly for transporting United Therapeutics' manufactured organ alternatives to patients in need, highlighting the potential of hydrogen technology in the medical field.