The helicopter crash landed when one of its two engines cut out.

直升飞机两个发动机中的一个突然熄火时，直升机撞地着陆。

《柯林斯英汉双解大词典》

But in what can be the wildly gyrating final seconds of a helicopter crash, that is harder to achieve.

但是直升机在撞击的前一秒是天旋地转的，所以一般的车用安全气囊很难奏效。

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Helicopter crash: Rescue workers looked for bodies in the wreckage of a crashed helicopter near Mexico City Monday.

直升机坠毁：周一，营救人员在靠近墨西哥城的直升机失事现场搜寻尸体。

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Obama also noted the recent helicopter crash in Afghanistan, which killed 30 American soldiers over the weekend.

FORBES: President Obama: Downgrade Stems From Lack Of Political Will

Pictures of the flaming aftermath of the helicopter crash in central London are on many front pages.

BBC: Papers

Last year 39 Israeli soldiers were killed in Lebanon, and 73 more died in a helicopter crash.

ECONOMIST: An occupation Israel would love to end