Re: Cabin pressure at altitude

Date:         09 Mar 97 22:55:40 
From: (Sjouke de Boer)
Organization: Martinair Holland
References:   1
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Hi dale, Sjouke here...
Maybe I can clearify some things for you concerning the cabin pressure
of a 747.
First of all, the cabin pressure of allmost every airliner is at maximum
differential pressure for the greater part of the flight. This is for
passenger comfort. So there is little to no interest wether the airplane
is at fl150 or fl430 !!!
The average max. diff. press. is approximately 9.8 psi. and counts for
most of the modern airliners.