FlyerTalk Forums - View Single Post - 737NG - cracking of critical failure point part reported by Boeing
Old Sep 30, 2019 | 9:49 pm
  #34  
djmp
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Originally Posted by rxziebel
Actually, high pressure stress test and a cargo door blew. Nothing to do with the wing.
Umm, it was the last test in the cycle which flexes the wings under high pressure:

“During the ultimate load test, the wings are then pulled upward. To pass the test and be certified, the wings must bend without breaking until the load on them reaches at least 150 percent of the normally expected load.”

The door blew out during the wing flex.

Last edited by djmp; Sep 30, 2019 at 10:23 pm
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