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#11
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Kloudy wrote:
I think you mena seppuku I think I mena... uh.. "mean". ; ) -- Message posted via AviationKB.com http://www.aviationkb.com/Uwe/Forums...ation/200709/1 |
#12
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On Mon, 10 Sep 2007 11:22:12 -0400, The Visitor
wrote in : Remember this one? http://tinyurl.com/yt3526 "a maintenance manager working for the company at Haneda committed suicide to "apologize" for the accident." 520 Deaths for the want of a row of rivets: http://en.wikipedia.org/wiki/Japan_Airlines_Flight_123 The subsequent repair performed by Boeing was flawed. Boeing's procedures called for a doubler plate with two rows of rivets to cover up the damaged bulkhead, but the engineers fixing the aircraft used two doubler plates with only one row of rivets. This reduced the part's resistance to metal fatigue by 70%. According to the FAA, the one "doubler plate" which was specified for the job, (the FAA calls it a "splice plate" - essentially a patch), was surprisingly cut into two pieces parallel to the stress crack it was intended to reinforce, "to make it fit".[3] This negated the effectiveness of one of the two rows of rivets. During the investigation Boeing calculated that this incorrect installation would fail after approximately 10,000 pressurizations; the aircraft accomplished 12,319 take-offs between the installation of the new plate and the final accident. |
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