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Subject 9/11: PENTAGON AIRCRAFT HIJACK IMPOSSIBLE FLIGHT DECK DOOR CLOSED FOR ENTIRE FLIGHT

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[quote:Anonymous Coward 621262:MV85MzIxODlfMTQ0Nzk2MDhfREM0NzE1MUU=]
[quote:G. House]

But more importantly.

The flight recorder system was manufactured in 1997 so it was an update for this particular recorder system.

The aircraft was built in 1991 and did not actually have a door sensor.

The FDR shows 0's for the flight door because it was an unused block.

Your thread topic has just been debunked.

Sorry.

you didn't debunk anything, you just showed how little you know, this is from pilots for the truth forum:

[i]
"The FLT DECK OPEN parameter was not added to the FDR frame (757-3 A2) until 1997. The plane was manufactured in 1991 using an earler frame structure which did not include the parameter, so a binary 0 for an unused data block."[/i]

This claim is wrong because actually all the FDR system has been updated before 08/18/2001...

According to http://www.boeing.com/commercial/aeromagazine/aero_02/textonly/s01txt.html

Airplanes manufactured before October 11, 1991, without an FDAU or DFDAU as of July 16, 1996.
Airplanes manufactured before October 11, 1991, with an FDAU or DFDAU as of July 16, 1996.
Airplanes manufactured after October 11, 1991, after August 18, 2000, and after August 18, 2002.

AIRPLANES MANUFACTURED PRIOR TO OCTOBER 11, 1991, WITHOUT AN FDAU OR DFDAU INSTALLED AS OF JULY 16, 1996.
The new rule requires that by August 18, 2001 the FDR record at least 18 parameter groups. For most airplanes, this is an increase from 11 parameter groups, as described in "Effects of 1989 FAA Flight Data Recorder Rule Change" on page 32.

The new rule requires that by four years from date of rule at least 22 parameter groups be recorded by the FDR. In this group are Boeing models 727, 737, 747, 757, 767, DC-10, and MD-80.

Flight 77 = N644AA 2460

Certificate Issue Date 05/08/1991

http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=644AA

N644AA = AIRPLANES MANUFACTURED PRIOR TO OCTOBER 11, 1991

So N644AA has been updated before August 18, 2001

:bushfing:

Not so fast:

The aircraft was manufactured before October 11 1991.

The rule for these aircraft is:

[b]AIRPLANES MANUFACTURED PRIOR TO OCTOBER 11, 1991, WITHOUT AN FDAU OR DFDAU INSTALLED AS OF JULY 16, 1996.
The new rule requires that by August 18, 2001 the FDR record at least 18 parameter groups. For most airplanes, this is an increase from 11 parameter groups, as described in "Effects of 1989 FAA Flight Data Recorder Rule Change" on page 32. On about half of all the Boeing 727, 737, DC-8, and DC-9 models the FDR system uses a single FDR, a result of the late 1980s replacement activity. Most of these FDRs should have enough spare inputs to accommodate the increased requirements with little or no modification required. Other parameter groups required to be recorded include the addition of both flight control surface positions and flight control inputs for all three axes (lateral, directional, longitudinal), lateral acceleration, and autopilot engagement status. Airplanes manufactured prior to October 11, 1991, with a FDAU or DFDAU installed as of July 16, 1996. The new rule requires that by four years from date of rule at least 22 parameter groups be recorded by the FDR. In this group are Boeing models 727, 737, 747, 757, 767, DC-10, and MD-80. Most of these airplanes record almost all the 22 parameter groups, some of which operators may ask Boeing to remove to save weight or to avoid maintenance costs if a parameter group is not required by a particular country's regulatory agency. The additional parameter groups required to be recorded include the addition of flight control surface positions and flight control inputs for all three axes, lateral acceleration, and autopilot engagement status. [/b]

Let me repeat this:

[b]The new rule requires that by August 18, 2001 the FDR record at least 18 parameter groups.[/b]

If you read the rest of it you will glean that later aircraft will require 34, 57, or 88 parameter groups to be recorded.

The door sensor is not required on the earlier aircraft but they COULD have a flight recorder installed that had the capacity for more parameters, but they were unused blocks.

Or possibly it might have had to record 22 parameters, but that is still much less than the 34, 55, or 88 parameter capable recorders.

Feel free to provide a list of EXACTLY what the required 22 parameters were.
[/quote]
shillhouse = traitor
[/quote]

Original Message [link to pilotsfor911truth.org]

9/11: PENTAGON AIRCRAFT HIJACK IMPOSSIBLE
FLIGHT DECK DOOR CLOSED FOR ENTIRE FLIGHT

(PilotsFor911Truth.org) - Newly decoded data provided by an independent researcher and computer programmer from Australia exposes alarming evidence that the reported hijacking aboard American Airlines Flight 77 was impossible to have existed. A data parameter labeled "FLT DECK DOOR", cross checks with previously decoded data obtained by Pilots For 9/11 Truth from the National Transportation Safety Board (NTSB) through the Freedom Of Information Act.

On the morning of September 11, 2001, American Airlines Flight 77 departed Dulles International Airport bound for Los Angeles at 8:20 am Eastern Time. According to reports and data, a hijacking took place between 08:50:54 and 08:54:11[1] in which the hijackers allegedly crashed the aircraft into the Pentagon at 09:37:45. Reported by CNN, according to Ted Olson, wife Barbara Olson had called him from the reported flight stating, "...all passengers and flight personnel, including the pilots, were herded to the back of the plane by armed hijackers..."[2]. However, according to Flight Data provided by the NTSB, the Flight Deck Door was never opened in flight. How were the hijackers able to gain access to the cockpit, remove the pilots, and navigate the aircraft to the Pentagon if the Flight Deck Door remained closed?[3]

Founded in August 2006, Pilots For 9/11 Truth is a growing organization of aviation professionals from around the globe. The organization has analyzed Data provided by the National Transportation Safety Board (NTSB) for the Pentagon Attack, the events in Shanksville, PA and the World Trade Center attack. The data does not support the government story. The NTSB/FBI refuse to comment. Pilots For 9/11 Truth do not offer theory or point blame at this point in time. However, there is a growing mountain of conflicting information and data in which government agencies and officials along with Mainstream Media refuse to acknowledge. Pilots For 9/11 Truth Core member list continues to grow.

[link to pilotsfor911truth.org] for full member list.

[link to pilotsfor911truth.org] to join.

[1] Hijacker Timeline - [link to pilotsfor911truth.org]

[2] Common Strategy Prior to 9/11/2001 - [link to pilotsfor911truth.org]

[3] Right click and save target as here to download csv file with "FLT DECK DOOR" parameter.

Pictures (click to insert)





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