波音获美国FAA批准推动777-9进入认证测试的第四阶段

格隆汇
Mar 19

波音公司表示,美国联邦航空管理局(FAA)已批准其继续推进其777-9客机进入认证测试的第四阶段。777-9是波音拖延已久的新型777X喷气机的首款机型,该公司已为这一开发项目支出150亿美元,较原定计划的推出时间晚了6年。

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