Date: 30 Mar 97 03:54:27 From: firstname.lastname@example.org Organization: Canada Internet Direct, Inc. References: 1 2 3 4 5
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katie@physics12.Berkeley.EDU (Katie Schwarz) wrote: Altitude certification of aircraft depend upon a large number of requirements. Pressurization limitations are normally based on structural limitations (ie. maximum differential to maintain the industry normal maximum cabin altitude of 8000 ft.), or time required to descend to a more hospitable altitude in case of a pressurization malfunction. The Concord frequently flies at altitudes above FL600. The passenger masks are not required to sustain phisiological requirements with a 60,000 foot cabin altitude as complete explosive decompressions are extremely rare. Most new generation business jets are certified between 45,000 ft. and 51,000 ft. and routinely fly between 41,000 ft. and 47,000 ft. for economy.