Friday, March 16, 2007

What time did Flight 175 take off?

According to the Bureau of Transportation Statistics, United Airlines Flight 175 took off from Boston's Logan Airport at 8:23 a.m, as this is listed as the "wheels-off time."

This data is published in my last post:

http://ningens-blog.blogspot.com/2007/03/flight-11-and-flight-77-now-in-bts.html

However, the 9/11 Commission Report states that "United 175 pushed back from its gate at 7:58 and departed Logan Airport at 8:14. By 8:33, it had reached its assigned cruising altitude of 31,000 feet."

http://www.9-11commission.gov/report/911Report_Ch1.htm

This document states that Flight 175 "departed" at 8:14.

FAA report, Executive Summary, Chronology of a Multiple Hijacking Crisis, September 11, 2001, Sept. 17, 2001 [Referenced Chapter 1, The 9/11 Commission Report, "We Have Some Planes," footnotes 40, 41] (page 1 of 3)

http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB165/faa5.pdf


This more detailed FAA document states that Flight 175 began its takeoff roll at 8:14, and that at 8:23, "Flight 175 established radio contact with Boston Air Route Traffic Control Center (ZBW). 'Boston, morning, United one-seventy-five out of one-nine (nineteen thousand feet) for two-three-zero (twenty-three thousand feet).'" The document continues that sometime after 8:23, Flight 175 was instructed to climb to 31,000 feet, and that at 8:40, Flight 175 radioed that it was at 31,000 feet.

FAA report, Summary of Air Traffic Hijack Events: September 11, 2001, Sept. 17, 2001 [Referenced Chapter 1, The 9/11 Commission Report, "We Have Some Planes," footnote 44] (page 12 of 59)

http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB165/faa7.pdf

JPEG here - click to enlarge and read or print:

So what does this all mean? Is the BTS database wrong? If not, how could Flight 175 radio that it was at 19,000 feet at 8:23 when it was just taking off? Could Flight 175 have reached 31,000 feet in 17 minutes at a normal rate of ascent? Would Flight 175 have been in the location it was said to be at various times if it in fact took off nine minutes later? If the FAA thought it was speaking to a plane that was at location X, and Flight 175 was not in fact at location X, what does that mean?

[Update: Another reason this time is important has become apparent to me from reading this FAA Report on Aircraft Accident about Flight 11:

http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB165/faa6.pdf

At page 3 of 4, the report states that Flight 175 made visual contact with Flight 11 and verified Flight 11's altitude at 8:38 a.m. (1238 universal time). This would not have been possible if Flight 175 left the ground at 8:23 as BTS says, rather than at 8:14, as the FAA and the 9/11 Commission say, because Flight 175 would have been 50 miles or more east of Flight 11's reported flight path.]

I don't know if my questions make sense as my knowledge of air traffic control comes from watching John Cusack and Billy Bob Thornton in "Pushing Tin." But given the war games going on, and the fact that as many as 11 planes were reported missing on 9/11, I have to wonder if the discrepancy in take off times means that the FAA in the documents above was not tracking and talking to Flight 175, but to some other plane or blip.

5 comments:

gfutfy said...

Catch the wow gold star that holds your gold in wow destiny,cheap wow gold the one that forever maplestory money twinkles within your heart. Take advantage of precious opportunities while they still sparkle before you. Always believe that your buy maplestory mesos ultimate goal is attainable cheap mesos as long as you commit yourself to it.maple money Though barriers may sometimes stand in the way of your dreams, remember that your destiny is hiding behind them.wow gold kaufen Accept the fact that not everyone is going to approve of the choices Maple Story Accounts you've made. Have faith in your judgment.wow gold farmen Catch the star that maple story money twinkles in your heart and it will lead you to your destiny's path. Follow that pathway and uncover the sweet sunrises that await you. Take pride in your accomplishments, as they are stepping stones to your dreams. Understand that you may make mistakes, powerlevelbut don't let them discourage you.ms mesos Value your capabilities and talents for they are what make you truly unique. The greatest gifts in life are not purchased, but acquired through hard work and determination.maplestory mesos Find the star that twinkles in your heart?for you alone maplestory powerleveling are capable of making your brightest dreams come true

Anonymous said...

You know ,I have some wow gold,and my friend also has some World of Warcraft Gold,do you kouw they have the same meaning,Both of them can be called
warcraft gold,I just want to
buy wow gold,because there are many
cheap wow gold

Anonymous said...

You know ,I have some wow gold,and my friend also has some World of Warcraft Gold,do you kouw they have the same meaning,Both of them can be called
warcraft gold,I just want to
buy wow gold,because there are many
cheap wow gold

Anonymous said...

aion chinaaion china gold,
aion cn goldaion chinese gold,
aion gold chinaaion gold chinese,
china aion goldchinese aion gold,
aion china kinaaion chinese kina,
aion kina chinachina aion kina,
aion china buybuy aion china,
aion chinese server goldaion cn server gold,
aion china server goldchina aion server gold,
chinese aion server goldaion chinese server gold,
aion cn server kinaaion china server kina,
china aion server kinachinese aion server kina

cheap 9Dragons gold said...

Now do you worried about that in the game do not had enough 2moons dil to play the game, now you can not worried, my friend told me a website, in here you can buy a lot 2moons gold and only spend a little money, do not hesitate, it was really, in here we had much 2moon dil, we can sure that you will get the cheap 2moons gold, quick to come here to buy 2moons dil.

Now do you worried about that in the game do not had enough 9Dragons gold to play the game, now you can not worried, my friend told me a website, in here you can buy a lot 9 Dragons gold and only spend a little money, do not hesitate, it was really, in here we had much 9Dragons money, we can sure that you will get the cheap 9Dragons gold, quick to come here to buy 9 Dragons gold.