如题，今天正在上课刷论坛，突然被
AI Answer
In aviation, code 7700 is used to indicate an emergency for an aircraft that is not radar identified. The crew may declare an emergency if the aircraft is in distress or urgent. Distress means the flight is in serious danger and needs immediate assistance, while urgent means the crew is concerned about the flight’s safety and needs assistance.
看radar在逐步往下降了，希望没事
CYFB居然能support 787-9降落 
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希望人没事
Grounded!
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ok上课上一半被老师gank去读莎士比亚了，飞机现在落地了，暂时不清楚因为点啥改道的……
这是老弟感觉挺牛逼的一点，跑道2000米以上还真够
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