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Old 02-19-2014, 01:42 PM
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WARBIRDRCER
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Absolutely correct Hircflyer, when I was working as a sheetmetal tech in the air carrier world, we were required to modify the structure due to that failure. When the engineers designed the fuselages there was one continues lap joint (seam) that ran forward and aft tying all the skins together. They did not envision the elements that led to this failure when designing the structure.

When the crack propagated and failed there was nothing to stop the full length of the lap to open like a zipper. Following this tear straps were added. They were additional structures added perpendicular to the joints. Now if a lap joint tried to unzip the tear strap prevented it from unzipping the full length of the skin panel.

Does this make everyone feel better about flying now?
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