that the flight data that Pilots for Truth has been analyzing is probably fabricated, so personally I don't think inconsistencies in it (with the OCT) are either surprising or a very effective source for arguments against the OCT.

what I find much more interesting is how consistent the fake truthers are with their inconsistency.   With the AA77/Pentagon controversy being so divisive, you would think that certain people would be all over this:

Version 7 of "What hit the Pentagon? Misinformation and its Effect on Credibilty...." is at the Journal of 9/11 Studies

article by Frank Legge for promoting division by bringing attention to the subject.  But of course they aren't, because Frank Legge is arguing in favor of the OCT (no matter how much he or anyone else might claim that they are arguing not in favor of the OCT but against "unproven alternative theories".)

I still think that in outreach to novices on the entire 9/11 truth issue we should stick with building 7 and the explosives in the towers, but internally, among real truthers, we need to get to the bottom of what happened at the Pentagon, precisely because so many seem so keen on us not doing so.

My own suspicion is that there were explosives planted in the Pentagon by someone.  The damage to the building looks most consistent with this.  Eyewitness testimony about an alleged plane is irrelevant because it is all contradicts itself.  The five frames showing some kind of impact would have been exceedingly easy to fabricate, as would downed light poles, and even a flyover.  We don't need to prove that any of these things were faked, because there is no need to disprove a claim that cannot be supported with any of the literal mountains of hard evidence that should exist in its support.

Explosives in the Pentagon, our military HQ, is very different from explosives in a privately managed WTC, hence the willingness of fake truthers to, even if grudingly, accept explosives were placed in the WTC but fanatical opposition to any kind of undermining of the OCT with regard to the Pentagon.