F-35 ett fiasko? Läckta Rand rapporten och annat kul

[...] The F-18E entered service about a decade ago, and was supposed to last 6,000 flight hours. But the portion of the wing that supports the pylons holding stuff (bombs, missiles, equipment pods or extra fuel tanks) is now expected to be good for no more than 3,000 flight hours. The metal, in effect, is weakening faster than expected. Such "metal fatigue", which ultimately results in the metal breaking, is normal for all aircraft. Calculating the life of such parts is still part art, as well as a lot of science. Again, unexpectedly high combat operations are the culprit. One specific reason for the problem was the larger than expected number of carrier landings carrying bombs. That's because so many missions flown over Iraq and Afghanistan did not require F-18Es to use their bombs or missiles.

The navy is modifying existing F-18Es to fix the problem, which is a normal response to such situations. Sometimes these fixes cost millions of dollars per aircraft, but this particular fatigue problem is costing more to fix than expected. Many aircraft appear beyond repair, and will have to be retired after 8,000 hours in the air.