Turbotech, Safran, and Air Liquide have achieved a groundbreaking milestone in the aviation industry by successfully ground testing the first liquid hydrogen-fueled gas turbine engine for light aviation at Air Liquide's Grenoble Technologies Campus in France. This demonstration is part of the BeautHyFuel project, aimed at exploring hydrogen propulsion solutions for light aircraft and led by Turbotech, Elixir Aviation, Safran, Air Liquide, and Daher. The project, supported by the French Civil Aviation Authority as part of the country's post-Covid stimulus program, showcases the collaborative effort to transition to fully decarbonized aircraft propulsion. The recent ground demonstration testing of the hydrogen-fueled gas turbine aeroengine with an ultra-efficient regenerative cycle and fed from a liquid hydrogen tank is a significant advancement following the initial engine qualification test campaign earlier in 2024. By integrating a cryogenic liquid storage system developed by Air Liquide in the second test phase, the project demonstrates the feasibility of a complete high-tech propulsion solution with zero carbon emissions in flight. The project not only emphasizes the energy density and operability of the hydrogen propulsion system but also underscores the importance of collaboration between industry players to accelerate innovation in hydrogen technologies. The BeautHyFuel project, formed in 2022, aims to design and ground test a hydrogen propulsion system for light aviation, benefitting from the expertise of Turbotech, Safran, Air Liquide, Elixir Aviation, and Daher. The project's success is a testament to the joint efforts of aerospace majors and SMEs, highlighting the potential for low-carbon flying and addressing challenges in hydrogen propulsion for commercial aviation. Supported by the French government, the BeautHyFuel project contributes to reducing greenhouse gas emissions in air transport, aligning with the global shift towards decarbonization in the aviation industry.