Notice - Overbooking of Flights - Airline flights may be overbooked, and there is a slight chance that a seat will not be available on a flight for which a person has a confirmed reservation. If the flight is overbooked, no one will be denied a seat until airline personnel first ask for volunteers willing to give up their reservation in exchange for compensation of the airline’s choosing. If there are not enough volunteers, the airline will deny boarding to other persons in accordance with its particular boarding priority. With few exceptions, including failure to comply with the carrier’s check-in deadlines, which are available upon request from the air carrier, persons, denied boarding involuntarily are entitled to compensation. The complete rules for the payment of compensation and each airline’s boarding priorities are available at all airport ticket counters and boarding locations. Some airlines do not apply these consumer protections to travel from some foreign countries, although other consumer protections may be available. Check with your airline or your travel agent.

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这里没有说,已经有座位的,还可以被赶下飞机去. 是说不让其他人上飞机,

不该让机组人员上飞机,,而不是把有座位的乘客赶下去给机组人员让座位. 

不过,我的飞行经历很美好.没有任何出格的事情发生.就是一个空姐让我托运行李,我说里面有电池和充电宝..你得负责替我保管好.按规定是乘客要随身携带的..她就让我自己带到飞机上了.