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I've been wondering about one other aspect of this fascinating discussion..... We may have talked about this before. Does anyone know to what altitude the cabin of commercial jets are pressurized when at normal cruising levels ? I did hear once (in the B-727 era) that it was somewhere around 6,000 to 8,000 feet. Is there a manufacturer's recommendation? Is there a company policy? Are there regulations on the subject? The easy answer would be to take an altimeter in one's carry on luggage at some time in the future. Unfortunately that would probably be viewed with considerable suspicion, even if it passed the security check. Just wondering - it might have a bearing on the things we are talking about....... Thanks to all who are contributing, Regards, Terry |
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