| http://www.w3.org/ns/prov#value | - Here for example is a story about some of the problems the USAF is running into now with the F-15 wing, which is composite and approaching 20 years old in many aircraft, e.g. the linked article notes an F-15 coming apart midflight in 2003 because of a sudden failure of the wing, and yet routine inspections every 200 hours had shown no signs of incipient failure.
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