American Airlines announced an investment in ZeroAvia, a developer of hydrogen-electric, zero-emission aviation. In addition to the investment, a memorandum of understanding provides American with the opportunity to order up to 100 engines from ZeroAvia’s hydrogen-electric powertrain development program. The engines are intended to power regional jet aircraft with zero emissions. Derek Kerr, American’s CFO, said the investment has the potential to play a key role in the future of sustainable aviation. According to the announcement, ZeroAvia is working to achieve certain types of certifications for its propulsion technology that will pave the way for the engines to be incorporated into the regional jet market in the future. The ZA2000-RJ powertrain is anticipated to enable passengers to fly in zero-emission regional jets as early as the late 2020s. Val Miftakhov, founder and CEO of ZeroAvia, said that having support from the world’s largest airline “is a strong indication of the progress being made in the development of hydrogen-electric, zero-emission flight.”