Austria's Bosch Aviation Technology has achieved a groundbreaking milestone by converting a popular Rotax piston aeroengine to operate on hydrogen, a zero-emissions fuel. In a feasibility study lasting approximately four months, the company successfully modified the Rotax 916 4-liter turbocharged aeroengine to run on hydrogen. This innovative step aims to enable zero-emissions flight for light aircraft, offering a sustainable solution to reduce environmental impact in the aerospace industry. The project highlights Bosch's dedication to technological advancement and environmental responsibility within aviation. By embracing hydrogen as a fuel source, Bosch's initiative represents a significant leap towards cleaner and greener aviation practices. The successful conversion of the Rotax engine demonstrates the feasibility and potential for hydrogen-powered aircraft, paving the way for future developments in sustainable aviation technology.