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Is the normal atmospheric pressure maintained inside airplane's cargo cabin?

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On most commercial jet types, most of the cargo hold is not pressurized; however, there's usually a section near the nose which is heated and pressurized for things like pets/livestock or sensitive cargo. But for the most part, it's unpressurized and unheated.

Edited to add: except in the case of the Boeing 787, which apparently heats the cargo hold with fire. (Okay, just kidding.)

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oh ! so I just read somewhere beer can might explode due to low pressure at high altitude. Is that right?
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That's exactly right, along with shampoo bottles, toothpaste tubes, and any other sealed containers. Doesn't always happen, but the potential is there.
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It depends like he said near the nose there is a pressurized area
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awe... how will I take some murphy stout beer back home?
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I'd say it's worth the risk. It probably will travel just fine. To be safe, put the cans or bottles in large freezer bags so if they do leak, at least they won't leak all over your underwear.
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So I can take them? Will I be in trouble for carrying pressurized liquids?
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Should I inform them? Im just trying to put it in the luggage so that customs wouldn't interfere.
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Check with the airline to be sure, but I suspect they can go in your checked bag without a problem.
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Eric, you rock! I shall from now on use freezer bags to protect my granny panties and Mr. Happy's tidy whities!
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I'll be doing that myself tomorrow, in fact!
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Have a safe flight and a great trip! See you when you get back! :)
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I definitely will, but I'm taking all of you with me... so to speak. :-)
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No

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Depends on the airline and what kind of plane. My airline doesn't have a pressurized cargo bin therefore we do not take animals. They'd die in there.

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Is it a no-animal policy or just a desire to not deal with pressurized cargo?
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The 737 isn't designed with it.
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Oh! Do you fly for the cool orange airline?
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Orange? You mean orange, red and brown as in Southwest? Yes, but now it's "canyon blue" with orange and red.
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One of my favorites! I'll be aboard a Southwest flight this afternoon, in fact.
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Cool! If you get a plane with WiFi you can answer questions from 40,000 feet up! haha
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I will be on a plane with wifi, and I plan to work all the way from OAK to SLC!
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Excellent, post a few answers from up there for us!
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Eric gave a good answer. However I would like to point out that if you need a detailed or specific answer, you should check with the carrier and find out what cargo options are available or what are the cargo conditions on the plane you are flying on. As far as beer goes, it would not be a good idea to put it in your luggage.

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Watch the film Eagle Eye. There are drugs that can lower your bp to safely travel in a cargo hold, but on average cargo holds are not pressurized!

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