Re: Passenger cabin pressurization

Date:         16 Sep 97 02:37:12 
From:         jf mezei <"[non-spam]jfmezei">
Organization: VTL
References:   1 2
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Malcolm Weir wrote:
> Aircraft do lose cabin pressure.  Do not plan any dive / flight profile
> that *depends* on the cabin being pressurized...

I am perfectly aware of this. But a recent discussion made we wonder how
aircraft decide what the cabin pressure should be relative to altitude.
(eg: would cabin pressure of a 747 CRUISING at 9000ft, another at 30k
feet and
another at 40k feet be all set to the "8000 ft" ?)