Airlines already blacklist passengers for all sorts of reasons, from bad behavior to breaking their ticket rules.

航空公司因各种原因将乘客们纷纷列入黑名单，从不良行为到违犯机票规则。

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Another possible reason might be that passengers fear that they would be compensated less for exiting overbooked flights than they might have under the prior rules.

另一个原因可能是乘客们担心，一旦他们离开超售的航班，他们所获得的补偿会比以前少。

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The ETRC and MEPs are pushing Mr Barrot to negotiate bilateral agreements on rules for transit passengers.

欧洲旅游销售理事和欧洲议会成员正催促Barrot先生对过境旅客方面的规定达成双边协议。

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It turns out that someone at TSA must have been asking the same question because the rules are finally changing for some passengers.

FORBES: For Some Fliers TSA Security Lines Just Got Much Shorter

So here are some simple rules of the air, and some guidance for passengers at any place in the corporate hierarchy.

FORBES: 11 Rules Of Thumb For Flying With The Boss

"Ultimately passengers will pay for these new rules, because the profit margins of carriers are too thin to absorb the cost of major unforeseen events, " said Dr Ashley Steel, KPMG's global chair for transport.

BBC: EU unveils new air passenger rights