KLM Royal Dutch Airlines and ZeroAvia have announced a collaboration to work on a demonstration flight using ZeroAvia's hydrogen-electric ZA2000 engines for large regional turboprops, marking a significant step towards sustainable aviation. Hydrogen-electric engines utilize hydrogen in fuel cells to generate electricity, powering electric motors that turn aircraft propellers with the only emission being low-temperature water vapor. Studies suggest that this technology could lead to up to a 90% reduction in climate impact compared to traditional kerosene-fueled flights. The companies plan to conduct an initial flight demonstration in 2026, focusing on obtaining regulatory licenses, ensuring the supply of liquid hydrogen fuel, and developing the necessary infrastructure for aircraft fueling. This endeavor aims to showcase the viability of more environmentally friendly flights and accelerate the adoption of hydrogen aircraft concepts across the European Union. For KLM, sustainability is a key focus area, with the airline aiming to decarbonize the aviation sector through advanced technologies like hydrogen and electric aviation. The partnership with ZeroAvia not only pushes for innovation in green aviation but also involves building expertise in maintenance, repair, and operations (MRO) for hydrogen fuel cell aircraft. ZeroAvia has already made significant progress, with tests conducted on its ZA600 engine prototype and ground testing for the ZA2000 system technologies. The ZA2000 engine is designed to be compatible with regional turboprop aircraft, potentially offering a sustainable solution for flights with up to 80 seats. This collaboration signifies a proactive step towards a greener future in aviation.