American Airlines has recently placed an order for 100 hydrogen-electric engines from ZeroAvia, marking a significant shift from traditional jet fuel towards sustainable aviation. The engines are set to be operational by 2027 and will help American Airlines reduce emissions without the need for new planes. This move is part of the airline's goal to achieve net-zero emissions by 2050. The hydrogen-electric engines work by utilizing electricity from hydrogen fuel cells, resulting in cleaner emissions and quieter flights compared to traditional jet engines. The collaboration between American Airlines and ZeroAvia is expected to revolutionize commercial flight by significantly reducing emissions and operating costs. The adoption of hydrogen technology in aviation is seen as a promising step towards a more environmentally friendly industry. The deal between American Airlines and ZeroAvia is anticipated to influence other major airlines to consider similar transitions, potentially leading to a widespread adoption of hydrogen-electric engines in the future. Although the shift will require new infrastructure and regulatory approvals, airports and regulators are already preparing for the hydrogen revolution in aviation. American Airlines' commitment to sustainable aviation and the purchase of 100 hydrogen-electric engines symbolize a significant milestone in the industry's efforts towards a cleaner and more efficient future.