On Thu, 1 Nov 2007 19:32:22 -0400, "Blueskies"
wrote:


"Nick O'Tyme" wrote in message
...


No mention of the 1950's Comet crashes which resulted in the installation of the black box and the process of laying
out the aircraft in a hangar to determine why it crashed. Very important methinks.



Yes, and industry learned a bunch about metal fatigue from those also...

Metal fatigue was already well-known. What they learned was how
repeated cabin pressurizations had to be accounted for in the
design to minimize the fatigue.

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