9/11gate, "AA77" FDR numerology Options

[tumetuestumefais...]

I was looking into the "AA77" FDR record to find out how the Lat/Lon coordinates were shifted by Mr. Stutt and Legge to get the plane on the runway. So I've chosen the map closest to 2001 and I've plotted the last "AA77" landing, taxiing in, standing at the gate, taxiing out and the last takeoff:
(IMG:http://xmarinx.sweb.cz/situation1.png)

(The numbers are numbers of subframes in the FDR and they can also serve as a timing, because their step is one second. So for example when you've frame number 145840 and frame number 145860 it means they're 20 seconds from each other. Only point when it is interrupted is when the plane stands, then the FDR is not recording - in our case at the subframe count 146180. The needed data were provided to me by Mr. Warren Stutt)

Everybody sees at the situation picture that the coordinates taken from the FDR are off.
How much off they are?
I was looking what a reference I can find for landing and I've found the point where the plane sharply turned from the runway to the taxi circuit.

From the logic of the landing, the overal visible shift and the trajectory pattern is absolutely clear where it was:
(IMG:http://xmarinx.sweb.cz/turn.png)

Then I've got a strange idea and I've decided to measure the distance and angle to the position where the plane quite clearly parked to and departed from the gate:
(IMG:http://xmarinx.sweb.cz/1666.66.png)

From the distance number is clear that we keep up with the perps at least numerologically... (IMG:http://pilotsfor911truth.org/forum/style_emoticons/default/rolleyes.gif)

Let's have a break and have a look what number had the gate where the "AA77" was boarded and departed. We easily find it in the Wikipedia:

"The flight boarded through Gate D26, in Midfueld Concourse D at Dulles."

or here:

"In 2001, American Airlines Flight 77, a Boeing 757, left gate D26 at Dulles en route to Los Angeles International Airport, but it was hijacked and deliberately crashed into the Pentagon as part of the September 11 attacks."

Let's yet have look into govt. documents...yep, it is there (page 29):

"Flight 77 pushed back from Dulles Gate D-26 at 8:09 A.M."

Boring. Let's go back to our little petty plots.

Now we need to measure the same distance and the same angle from the point where the plane sharply turned to the taxi circuit:
(IMG:http://xmarinx.sweb.cz/turn-gate.png)

And where the line ends?
Here:
(IMG:http://xmarinx.sweb.cz/gate-gate.png)

Lets look what number the gate has:
(IMG:http://xmarinx.sweb.cz/IAD-ConcourseD.png)
SOURCE

It's not completely clear what a number the gate has - we have there two gates:
9 and 11.

[trimble]

Basically the above analysis shows that when the FDR lat/long is corrected for INS drift, it shows that the FDR positional data has the aircraft departing from a gate which conflicts with official reports. The INS drift is a whole other issue as well. "Debunkers" know that such a large error is present in all flights, but they dont seem to apply the same error correction at the end of data. If they did, the aircraft would show North of Citgo.

Hang on a second. This makes little sense to me. On the one hand, you state that the drift is constant and thus correctable at both ends (ie. its a spatial translation). On the other, you state that this would put it north of CITGO. OK. But the north flightpath cannot then converge with the south flightpath to the alleged point of impact if you are claiming the reason for the N/S discrepancy is this spatial translation (no rotational component). Thus, surely, the CIT interviewees who plot such an effectively converging course would contradict with such an explanation for the N/S discrepancy.

What am I missing ? (IMG:http://pilotsfor911truth.org/forum/style_emoticons/default/smile.gif)

This post has been edited by trimble: Feb 26 2011, 08:21 AM

[tumetuestumefais...]

Hang on a second. This makes little sense to me. On the one hand, you state that the drift is constant and thus correctable at both ends (ie. its a spatial translation). On the other, you state that this would put it north of CITGO. OK. But the north flightpath cannot then converge with the south flightpath to the alleged point of impact if you are claiming the reason for the N/S discrepancy is this spatial translation (no rotational component). Thus, surely, the CIT interviewees who plot such an effectively converging course would contradict with such an explanation for the N/S discrepancy.

What am I missing ? (IMG:http://pilotsfor911truth.org/forum/style_emoticons/default/smile.gif)

You are literally missing the point, I would say you are missing it some 20 miles. This topic is mainly about "AA77" last landing and takeoff at IAD and especially about identifying the gate where the plane was boarded. (IMG:http://pilotsfor911truth.org/forum/style_emoticons/default/rolleyes.gif)

The N/S drift in the data at IAD has little to nothing to do with the drift near Pentagon and if we would really apply this drift at IAD to correct the coordinates near Pentagon, then the plane would be very far - like ~800meters north of Citgo somewhere above Arlington cemetery.

[trimble]

You are literally missing the point, I would say you are missing it some 20 miles. This topic is mainly about "AA77" last landing and takeoff at IAD and especially about identifying the gate where the plane was boarded. (IMG:http://pilotsfor911truth.org/forum/style_emoticons/default/rolleyes.gif)

I'm well aware of what is being discussed in this topic. However it was RB who wrote a response (it was his text I quoted) that said that this drift when applied at the Pentagon would put the plane "north of Citgo". In writing that, I suggest that this would imply to the average casual reader that this drift is somehow supportive to the NoC flightpath. I was calling him on it, as it obviously is no such thing. Hence my query. I think it is you who missed MY point (IMG:http://pilotsfor911truth.org/forum/style_emoticons/default/tongue.gif)

In any case, you have provided the affirmative correction yourself. So thankyou.

The N/S drift in the data at IAD has little to nothing to do with the drift near Pentagon and if we would really apply this drift at IAD to correct the coordinates near Pentagon, then the plane would be very far - like ~800meters north of Citgo somewhere above Arlington cemetery.

This post has been edited by trimble: Feb 26 2011, 01:11 PM