适航管理程序 airworthiness procedures 适航管理通告 airworthiness notice ..
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airworthiness procedures
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以上为机器翻译结果，长、整句建议使用 人工翻译 。
In January, the FAA issued an airworthiness directive ordering airlines to provide flight manuals that outline procedures for pilots to regain control of a 737 that goes into a sudden turn or roll.
CNN: NTSB urges pilot training for 737 rudder problem
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