监控该事件的社交媒体用户表示，飞行员发送了“7700”紧急代码。肯尼亚内毕罗的航空技术员安东尼·奥奇恩格在X平台上写道：“国泰航空空客A350-1000（B-LXM）从波士顿飞往香港的CX811航班在起飞17分钟后，要返回波士顿。A350发送了770 ...
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