As well as being able to control features of the aircraft seat, such as cabin crew alerts and volume controls, services such as destination content and information about activities are also included.

这一功能除了可以控制如乘务员呼叫和音量控制等座位上的服务以外，还增加了目的地和活动的信息。

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Michael Farr, a leading British 'Tintinologist', says Herge actually did a "lot of research" for Tintin's Indian journey: he secured catalogues of all the aircraft Air India used and uniforms the cabin crew wore at that time.

BBC: India's undying love affair with Tintin

"This policy reversal is against the best interest of the security of crew and passengers in the aircraft cabin and we will stop at nothing to fight it, " said the Flight Attendants Union Coalition, in a press statement issued Thursday announcing its campaign to reverse the TSA's decision.

CNN: Knives on a plane? Really?

To combat this threat, aircraft have a warning system which alerts the crew if the cabin altitude is approaching dangerous levels.

BBC: NEWS | Europe | Dangers of aircraft decompression