What difference does it make? When US Marines captured Salman Pak, the fuselage was there, just as the informers said it was, just as UN inspectors said it was, and as the satellite imagery no doubt showed it was and it was not from a 707. There were also a blown bus, 3 old train cars, and other evidence of use as terrorist training facility. See this AP article from nearly a year ago.
The place was also crawling with non Iraqi "fighters", that is terrorists, who tried to engage the Marines, although by the time the Marines captured the place, they were no longer there (of course not, since they had come out to engage the Marines, some are probably still around killing civilians, Westerners as well as Iraqis) The capture was mentioned just last night on the History Channel's "one year later" series on the invasion of Iraq.