Re: 42,000 feet

Date:         25 Mar 97 03:38:10 
From:         "David E. Pearce Jr." <>
Organization: Lockheed Martin -- Denver  InterNetNews site
References:   1 2 3 4
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Karl Swartz wrote:

> Obviously not, since the 767 is certified to 43,000 feet (according to
> and Concorde routinely flies above 60,000 feet.

I thought the Concorde was certificated to fly at FL510. One of the Lear
jet models (35 I think) is also certificated to FL510. Everything else
is less.

A lot has to do with what the fuselage is designed to. Some are designed
to a limit of 8 psi, some 9 psi, some 9.5 psi. And it also has to do
with probable decompression rate vs vehicle performance.