Cracks Found During 767 Pylon Inspection

[markis10]

Not quite, there is a name to the actual model that describes this, and one of our engineering friends has alluded to it in the past on here.

Its called Durability and Damage Tolerance Certification.

By December 20, 2010, airlines that operate airplanes under Title 14 of the Code of Federal Regulations (CFR) 121 or 129 must revise their U.S. Federal Aviation Administration (FAA)-approved structural maintenance program to comply with the FAA’s Aging Airplane Safety Rule (AASR). This revised maintenance program must include damage-tolerance-based inspections; a means to address the effects that repairs, alterations, and modifications may have on fatigue-critical structure and these inspections; and a means by which all changes to the maintenance program receives FAA approval. Boeing has developed materials to help operators comply with this new rule.

http://www.boeing.com/commercial/aeromagazine/articles/qtr_02_10/3/

 

[mannej]

Markis10, there is also a statistical model that describes it aswell which for the life of me I can't remember what it is called, or what thread it came up in

 

[markis10]

Was it the Dolphin Curve Lifecycle Model?
Was doing a bit of searching on the web and did come across this Boeing analysis, very interesting !

http://www.boeing.com/news/techissues/pdf/statsum.pdf

 

[mannej]

Was it the Dolphin Curve Lifecycle Model?
Was doing a bit of searching on the web and did come across this Boeing analysis, very interesting !

http://www.boeing.com/news/techissues/pdf/statsum.pdf

I think thats the one.

Thanks for the link, just skimmed over it then, looks like good reading material for me