You guys have danced all around the big issue and focused on Mineta. The issue for me is who in the FAA was watching AAL77 and reporting it to SS when it was still 50 miles out? Isn't the 'official' FAA story that O'Brien spotted the plane first and set off the alarm bells to SS and DCA with the old 'six miles out' scenario?
Actually you're misrepresenting the data. Here's what the USSS notes actually say:
0927 - two aircraft missing
0930 - one of the missing aircraft is heading to Washington DC
0931 - aircraft is 30mi from DC
0934 - aircraft is 10mi from DC
0935 - aircraft is turning south
0936 - aircraft is (looks like "circles" and something else)
0938 - aircraft has crashed into Pentagon
Notably, according to the notes all of this has come from the FAA (looks to be either Senior Vice President, Operations or Vice President, System Operations Services, both part of the Air Traffic Organisation). Neither of these positions has access to primary radar. It's unclear if the position is at FAA HQ or the ATCSCC. If at Washington DC, they were reliant mostly on what the ATCSCC told them. If at Herndon they had only what the TSD showed, plus what the ARTCCs told them.
The phone connection was only established at 0925, so some of these reports can be assumed to be a case of "tell us what has been happening" as opposed to "this is happening right now".
Only information from 0931 onwards is definitely in reference to a specific aircraft identification of some kind (be that a primary, a secondary, or a TSD track). You'll note the greatest distance reported is 30 miles, not 50, which already directly contradicts Mineta's testimony and further reinforces that his account was probably in relation to a separate and unrelated tracking of an aircraft later in the day.
At 0931 AA77 was indeed about 30 miles from Washington DC, however your claim that it wasn't supposedly detected until 6 miles away is false. The aircraft was detected supposedly at 0932, at which time the aircraft was 20 miles from Washington DC. I can easily see how a little give or take in those times due to reporting delays would put the discovery at about the right time for 30 miles distance, which matches up perfectly with the official account - that AA77 wasn't detected until it was right on Washington DC (had it not slowed and turned it would have passed central DC by about 0934).
The "six miles" report is in reference to when the FAA notified NEADS, which was at 0936. By this time Dulles TRACON had been tracking AA77 for at least 4 minutes.
The question then comes back to the first two points in the USSS notes, what we can conclude from them, and what they might tell us.
Firstly we have "two aircraft missing". That's obviously just a general summary of the situation and doesn't relate to anything particularly specific. Given it's immediately after the phone bridge is established, this could easily be historic information. The second point has to be taken with this in mind - one of those aircraft is heading to Washington DC. At 0930.
Well, at 0930, the FAA was aware of at least
two flights that might be heading to Washington DC, in fact.
The first was AA11, which, due to a ghost TSD display, was erroneously though to still be heading south to Washington DC at the time. NEADS first learned of this at 0921, and as late as 0934 they were still directing Quit 2-5 to Washington DC to intercept AA11.
The second was AA77 which was lost heading west, but by now was being considered as a hijack. In fact as early as 0921 Dulles TRACON were told to look for AA77 on primary radar, so by now there was clearly concern that AA77 might be heading to Washington DC. In fact it was almost certainly because of that 0921 directive that Dulles TRACON detected AA77 at 0932.
The 0930 report of an aircraft heading to Washington DC wasn't based on any sort of radar return or tracking of an actual aircraft
at all, but on simple deduction based on what was happening.