Date: 09 Mar 97 22:55:40 From: email@example.com (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.