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LaBTop, might I suggest that you use radar data to calculate a speed. You do know it's available, don't you?
Trying to calculate an aircraft's speed based on radio calls is akin to trying to measure the speed of light with an abacus!
You really and truly need to find some other hobby.
...last sweep of the DCA radar disk,...
The DCA VOR radar disk or whatever one prefers to call it, can be found at:
...In many cases the VOR stations have co-located DME (Distance Measuring Equipment) or military TACAN (TACtical Air Navigation -- the latter includes both the distance feature, DME, and a separate TACAN azimuth feature that provides military pilots data similar to the civilian VOR). A co-located VOR and TACAN beacon is called a VORTAC. A VOR with co-located DME only is called a VOR-DME. A VOR radial with DME distance allows a one-station position fix. Both VOR-DMEs and TACANs share the same DME system.
VORTACs and VOR-DMEs use a standardized scheme of VOR frequency - TACAN channel pairing so that a specific VOR frequency is always paired with a specific channel for the co-located TACAN or DME feature; on civilian equipment, the VHF frequency is tuned and the appropriate TACAN channel is automatically selected...
Originally posted by LaBTop
Reheat, try for once to be helpful, instead of baiting others and being dis-respectful to about anyone here.
This is an audio tape of 24 minutes and 26 seconds actual total duration.
The time which should have been covered in that tape and explained in the 14 seconds monologue by a female voice at the start of the tape needs to be 13:48 minus 13:25, which is 23 minutes and zero seconds. Those are the starting and ending time stamps described in the file name and by the FAA themselves.
A discrepancy of 1 minute and 26 seconds short of those 24:26 actual minutes and seconds.
In other words, 86 seconds extra time have been seemingly inserted or added.
Start of tape is 09:25:00, and the voice of O’Brien telling us he observes the 757 at his 12 o’clock position starts talking at the 12:05 position in the tape.
2. 09:36:16 GOFER06 issued traffic (2a), eleven o'clock (a bit left of him), 5 miles(from DCA Reagan Airport) northbound, fast moving, type and altitude unknown.
08:26:33 (Tape 7982 C1B, Ground Control) Gofer 06 on transit ramp, radiocheck
09:20:44: (Tape 7982 C1A, Ground Control) Asks Gofer 6 how he spells his call sign.
Answer: Golf, Oscar, Foxtrot, Echo, Romeo.
[Note: Go figure. Why the Minnesota Guard would opt for Gofer over Gopher is baffling.]
09:26:30: (Tape 7982 C1A, Ground Control) Ground Control verifies Word 31 and Gofer 06 to Washington Flight Data. [Note: this is the cue that allowed National Tower to know that a military aircraft was taking off to proceed west ]
09:28:35: (Tape 7982 B1B, Arrival Radar) Gopher 06, released (LT: Note the wrong name Gopher)
09:30:40; (Tape 7982 C1A, Ground Control) Ground Control gives Gofer 06 permission to taxi to runway 1L
09:30:50: (Tape 7981 A1B, Local Control) Gofer 06 cleared for takeoff, not reported to Base Ops
09:31:40 (Tape 7982 C1A, Ground Control) Gofer 06 requests temporary hold to enhance INS system
09:38:40: (Tape 7982 B2A, Arrival Radar) National called, we're stopped.
Answer, you're stopped?
09:39: (Tape 7981A2A, Local Control, time approximate) Wash to Andrews, hold all ground departures
09:40: (Tape 7981A2A, Local Control, time approximate) Venus 77 on freq, need clearance direct Offut, will take off VFR to the east and get clearance later. Cleared Mode 0310 through Class B airspace
09:41: (Tape 7981A2A, Local Control, time approximate) Venus 77 cleared for takeoff
09:42:28: (Tape 7982 B2A, Arrival Radar) Tower to Arrival Radar, Venus 77, 747, a NECAP aircraft, he's going to take off VFR to the east, trying to get to Offut air base, he is not going to wait, already talked to Washington and we'll work out something
09:42:58: (Tape 7982 B2A, Arrival Radar) Tower to Arrival Radar re Venus 77, We're going to give him to Washington, standard east departure and we want a release on him now. Answer: Released.
09:44:41: (Tape 7982 B2A, Arrival Radar) Venus 77, heavy, set to go, talking to Washington ATC reported to Base Ops as 09:45 off. Flight Strip 0945
09:47:19: (Tape 7982 B2A, Arrival Radar) Venus 22 given visual to land on runway 1L, contact tower
09:47: (Tape 7981A2A, Local Control, time approximate) Venus 22 to land, will do 360 to burn off fuel
09:49: (Tape 7981A2A, Local Control, time approximate) Venus 22 cleared to land, reported to Base Ops 0954, down.
09:49:20: (Tape 7982 B2A, Arrival Radar) Printer message, advisory #7, advised all airborne traffic to pick a divert and land as soon as possible
09:53:20 (Tape 7982E TlS2, Local South) U/I says tell Ops we are going to recover the Bullys. There follows a conversation about a B747coming to Andrews. Tower has no knowledge unless it is Venus 77. (LT: VENUS 22 which landed 0954?)
The transcript NEADS produced is fatally incomplete and inaccurate:
When we arrived at NEADS, we began to listen to the tapes from which the transcript was made.
It was apparent immediately - and acknowledged by NEADS officials - that there are significant relevant omissions in the transcript.Voices that are clearly audible in the tape were not transcribed. Moreover,significant portions of the transcript are simply inaccurate; the words on the paper do not track what is clearly heard on the tape. Put simply, the transcript is useless as a formal record of NEADS conversations from 9/11 and will have to be done over.
The transcript of the tapes NEADS produced represents at best one-third of the total relevant recorded materials NEADS possesses from 9/11:
We discovered further that the one transcript produced by NEADS - which captures approximately five channels of communication - constitutes only a fraction - at best one-third - of the relevant recorded telephone lines in the facility. Specifically, we learned that the NEADS transcript does not reflect conversations by personnel assigned to key positions at the SOCC (Sector Operations ControlCenter) on 9/11.
As we understand it, there are 46 channels that can be recorded from the SOCC floor.
Of these 46 channels, only five or six were transcribed and produced to the Commission prior to our visit to NEADS.
More broadly, Team 8 believes that the Commission's policy of accepting transcripts in lieu of factual recordings should be revisited in light of its experience with the NEADS tape.
Google Video Link
Now, pay attention: WORD31 Heavy was 'issued maintain 3000' according to the Pinnacle transcript. This occurred at 13:27:06 UTC.
I found it particularly unbelievable that we have no officially released seismic charts from the impact of a plane at the Pentagon west wall, since we have several 9/11 news reports about books falling off book-shelfs in houses more than one mile away from the impact. We however have no times connected to these events.