 The report stated that analysis of the F-15C wreckage determined that the longeron did not meet drawing specifications, which led to fatigue cracks and finally a catastrophic failure of the remaining support structures and breakup of the aircraft in flight.In a report released on 10 January 2008, nine other F-15s were identified to have similar problems in the longeron.As a result of these problems, General John D. W. Corley stated, "the long-term future of the F-15 is in question."