美国
航空宣布，已与氢电动航空解决方案初创公司ZeroAvia签署了一项有条件购买协议，订购100台发动机，这些发动机将为支线喷气式飞机提供动力，在飞行过程中除水蒸气外不产生任何排放。
英文原文如下：
American Airlines Signs Deal for 100 Hydrogen-Powered Engines from ZeroAvia
American Airlines announced that it has entered into a conditional purchase agreement with hydrogen-electric aviation solutions startup ZeroAvia for 100 engines that can power regional jet aircraft with zero inflight emissions save for water vapor.
