Lets throw YOU at 400mph into the side of a stone building and see how much of you survives.
An airliner disintegrates MUCH easier than flesh.
Oh, and coincidentally, no airplane parts were found at the World Trade Center, either. OMGWTFWEBOMBEDTHEMANDPEOPLEIMAGINEDTHE757/767ANDEVERYNEWSSTATIONINTHEFRIGGINWOR
DGOTHIJACKEDBYTHEUSGOVERNMENTASACOVERUP!