The potential silver bullet for Cooper being a 727 pilot is him telling Tina that the pilots could lower the aft stairs from the cockpit (like a C-130). Seems like a 727 pilot would know that wasn't possible...
I agree, if he was a commercial air line pilot and flew 727s, you would think that he would know that the stairs could NOT be lowered form the cockpit--I don't believe that any of the commercial 727 fleet had this capability right?
So, the question is, where he did he come to that conclusion that they could be lowered from the cockpit ? Was it simply a misinformed assumption ?
They way in which he is quoted seems to come off as him being quite confident in his assertion.
The only other option, was there a special 727 tricked out for the CIA which had this option and where Cooper may have been involved ? I know, the forums have discussed the Air America angle, and it has been said that the stairs were totally removed for that. But it seems a reasonable possibility that if the CIA wanted to drop assets in areas that they weren't supposed to be, using a 727 without an aft door in place would not be covert, it would be a dead give away. It would make more sense that a door would be in place to open and close.
But, then you have to ask the question, why wouldn't they just have a person lower it manually from the back? Reasonable question, but maybe the answer to that is if these are HALO jumps, that person would have to have a mask on...maybe just easier to have a button from the cockpit to open and close ?
Anyway, all speculation on my part. But I am bothered by the confidence in his assertion that they could be opened from the cockpit. Could just be a misinformed assumption I guess.