Unither Bioelectronics, a company based in Canada, recently made aviation history by conducting a three-minute helicopter flight powered by a PEM hydrogen fuel cell. The demonstration took place at Roland-Désourdy Airport in Bromont, Québec, showcasing the world's first hydrogen-powered helicopter operations. The successful flight, piloted by Ric Webb, utilized a Robinson R44 Raven II equipped with a dual PEM fuel cell and battery hybrid powertrain. Transport Canada Civil Aviation granted an experimental flight permit for the project. The flight, lasting three minutes and 16 seconds, emphasized the capabilities of hydrogen fuel cells in aviation, with 90% of the energy for the flight sourced from these fuel cells. Unither Bioelectronics plans to partner with Robinson Helicopter Company for the next phase of Project Proticity, aiming to integrate a liquid hydrogen storage system. This integration is crucial for enabling extended-range missions, such as delivering organ alternatives to patients in need. The article also delves into the broader discussion of hydrogen in aviation and its potential impact on reducing carbon dioxide emissions. Green hydrogen, produced from renewable electrical power, and blue hydrogen, derived from fossil fuels with permanent CO2 storage, are discussed as viable options for sustainable aviation. The article emphasizes the importance of pursuing defossilization in aviation and highlights the positive implications it can have for future generations.