I know I said that I would be ignoring skyeagle but he continues to spread barefaced lies and distortions that are worth correction…
skyeagle409, on 25 October 2012 - 05:04 AM, said:
Looking at history, 9/11 Truthers themselves, have been victims of disinformation and misinformation, such as, turning off a transponder will make an aircraft invisible on radar. How many times have 9/11 Truthers thrown that piece of false information at their opposition?
As I have said many times before, the B-767 and the B-757 are not stealth aircraft and we cannot expect enemy bomber crews to think that turning off their transponder will make them invisible to radar. After all, there are valid reasons why we have stealth aircraft. So here is another example of where knowledge comes on the playing field to set the record straight.
The fact is that turning off the transponder (which transmits position and identification data to ATC) does remove the track from civil secondary surveillance radar (SSR). The aircraft can still be tracked on primary radar but without the distinguishing transponder data, only unidentified ‘blips’ are visible to controllers - like looking for a needle in a haystack on their displays. And even through primary radar, due to clutter and gaps in coverage, it can be difficult to track even unidentified aircraft. In all, when the transponder is switched off, the location of the plane for a time and certainly its identity can effectively become ‘invisible‘ to radar controllers.
Anyone can research transponder and radar returns for themselves to confirm the above but here are some quotes demonstrating the situation on 9/11…
9/11 Commission report: -
The failure to find a primary radar return for American 77 led us to investigate
this issue further.Radar reconstructions performed after 9/11 reveal that
FAA radar equipment tracked the flight from the moment its transponder was
turned off at 8:56. But for 8 minutes and 13 seconds, between 8:56 and 9:05,
this primary radar information on American 77 was not displayed to controllers
at Indianapolis Center. The reasons are technical, arising from the way the
software processed radar information, as well as from poor primary radar coverage
where American 77 was flying.
According to the radar reconstruction,American 77 reemerged as a primary
target on Indianapolis Center radar scopes at 9:05, east of its last known position.
The target remained in Indianapolis Center’s airspace for another six minutes,
then crossed into the western portion of Washington Center’s airspace at
9:10.As Indianapolis Center continued searching for the aircraft,two managers
and the controller responsible for American 77 looked to the west and southwest
along the flight’s projected path, not east—where the aircraft was now
heading. Managers did not instruct other controllers at Indianapolis Center to
turn on their primary radar coverage to join in the search for American 77.
In sum, Indianapolis Center never saw Flight 77 turn around. By the time
it reappeared in primary radar coverage, controllers had either stopped looking
for the aircraft because they thought it had crashed or were looking toward
the west.Although the Command Center learned Flight 77 was missing, neither
it nor FAA headquarters issued an all points bulletin to surrounding centers
to search for primary radar targets. American 77 traveled undetected for
36 minutes on a course heading due east for Washington, D.C.
Norman Mineta interview with MSNBC: -
And a little later on, someone said, “Mr. Vice President, there's a plane 50-miles out.” So I was talking to Monte Belger, the Deputy Director of the FAA, and I said, “Monte, what do you have 50-miles out?”
He said, “Well, we have a target, bogey, on the radar, but the transponder's been turned off, so we have no identification of this aircraft. We don't know who it is. We don't know what altitude it's at, speed or anything else. All we're doing is watching with the sweep of the radar, the dot moving from position to position.”
Daniellie O’Brien, Dulles ATC, interview with ABC News: -
“Then I noticed the aircraft. It was an unidentified plane to the southwest of Dulles, moving at a very high rate of speed … I had literally a blip and nothing more.”
FAA timeline: -
0925:00 Between 0925:00 and 0930:00, this time is approximate based on personnel statements from Dulles Terminal Radar Approach Control (IAD). Several IAD controllers working radar positions in the facility observed a primary radar target tracking eastbound at a high rate of speed. Note: the unknown aircraft in this and all following times was later confirmed to be AAL77.
Why is all this worthy of note? The loss of position and identification information on 9/11, with incomplete tracking and subsequent designation as unidentified/unknown aircraft, provided opportunity for deception of ATC and opened the door to the U.S. Joint Chiefs of Staff plan that had been set out in Operation Northwoods decades before: -
“Take off times of the drone aircraft and the actual aircraft will be scheduled to allow a rendezvous south of Florida. From the rendezvous point the passenger-carrying aircraft will descend to minimum altitude and go directly into an auxiliary field at Eglin AFB where arrangements will have been made to evacuate the passengers and return the aircraft to its original status. The drone aircraft meanwhile will continue to fly the filed flight plan.”
Once we also question reason for the complete lack of physical identification of the 9/11 aircraft, then one must suspect foul play - a scenario that would not exist given a competent investigation. It is disconcerting that the possibility is viable and has been allowed to continue to exist.