原标题：美国737 MAX复飞再推迟 波音股价大跌

美国波音公司21日表示，预计该公司的波音737MAX客机将到今年年中阶段才有可能获得复飞许可，这一时间表比此前预期再次推迟了数月。

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波音方面表示，这一预期是基于此前安全审查的经验所作出的预估。目前，美国联邦航空局尚未就737MAX复飞许可给出具体的时间表。

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