The first F-35B short takeoff/vertical landing stealth fighter operates in vertical-landing mode on a special "hover pit" at Lockheed Martin in Fort Worth, Texas, during an April test.

4月，洛克希德·马丁公司沃斯堡工厂的“悬停坑”对首架短距/垂直起降F-35B隐形战斗机的垂直着陆方式进行测试试验。

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The parking brake is released during the takeoff warning test. This prevents the parking brake function of the takeoff warning horn from overriding the tests. Put chocks on the landing gear wheels.

起飞警告测试过程中停留刹车是松开的，用以防止停留刹车功能超控测试。

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Development of the G650 survived a crisis in 2011, when one of the jets crashed during a takeoff performance test in New Mexico, killing two Gulfstream pilots and two flight test engineers.

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