Bosch Aviation Technology, a subsidiary based in Vienna, successfully converted a conventional Rotax 916 aircraft engine to operate on hydrogen in a feasibility study. The project, completed in about four months, utilized existing components from Bosch's volume-production developments. By modifying the established engine design rather than creating a new one, Bosch demonstrated a practical and cost-effective approach to hydrogen propulsion. The adaptation work enhanced the engine's performance, paving the way for potential carbon emission reductions in general aviation. Although the initial power output of the hydrogen engine was modest at 115Kw, Bosch aims to further develop the technology to ensure operational feasibility. The company envisions future aircraft concepts that incorporate climate-friendly hydrogen technology to address the increasing environmental concerns in the aviation industry. The Rotax 916 engine, commonly used in various light aircraft models, ultralights, and homebuilds, has now been successfully adapted for hydrogen use, showcasing Bosch's commitment to innovation and sustainability in aviation.