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Context of '(8:34 a.m.) September 11, 2001: Reservations Office Manager Takes Over Monitoring Call from Flight 11 Attendant Betty Ong'

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Vanessa Minter.Vanessa Minter. [Source: Capitol Broadcasting Company]Betty Ong, a flight attendant on Flight 11, calls the American Airlines Southeastern Reservations Office in Cary, North Carolina, to report the emergency on her plane. Ong makes the call using an Airfone. [9/11 Commission, 7/24/2004, pp. 5; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006] Flight attendants know the reservations 800 number that she calls because they often call it to help passengers with reservations questions. Calls made to the number are routed to the first available phone station at one of several facilities, including the office in Cary. [Federal Bureau of Investigation, 9/11/2001, pp. 72-74; 9/11 Commission, 11/19/2003 pdf file; 9/11 Commission, 8/26/2004, pp. 8 pdf file]
Ong Tells Agent, 'We're Being Hijacked' - The call is answered by Vanessa Minter, a reservation agent. The first thing Ong says is, “I think we’re being hijacked.” [Federal Bureau of Investigation, 9/12/2001, pp. 38-41; 9/11 Commission, 7/24/2004, pp. 453] Minter will later reflect: “There was something in her voice that said: ‘Okay, this isn’t funny. This isn’t a joke. This is real.’” [WRAL, 9/9/2011]
Resolution Agent Joins Call - Minter asks Ong to hold for a moment. She then phones the American Airlines international resolution desk, which is on the other side of the building. Winston Sadler, the resolution agent, answers, and Minter tells him she has a woman on the phone who is calling from an American Airlines flight that is being hijacked. Minter says she cannot find the “emergency button” on her phone, and Sadler notices that she seems panicked. He offers to take over the call, and so Minter transfers it to him. The phone system allows Sadler to be connected to Minter’s line while Minter remains on it.
Alarm Sent Out to Notify Supervisor - Realizing the seriousness of the situation, Sadler pushes the emergency button on his phone, which initiates a tape recording of Ong’s call and also sends out an alarm that notifies Nydia Gonzalez, a supervisor at the reservations office, to pick up the call. Gonzalez will join the call from Ong a short time later (see 8:21 a.m. September 11, 2001). Sadler will tell the FBI that as soon as he joins Ong’s call, he is convinced it is a genuine phone call from an airplane, because he is used to hearing the background noise that occurs in calls from airplane telephones, and he can hear such noise during Ong’s call. [Federal Bureau of Investigation, 9/12/2001, pp. 38-41; Federal Bureau of Investigation, 9/12/2001, pp. 42-44; 9/11 Commission, 11/19/2003 pdf file; 9/11 Commission, 7/24/2004, pp. 453]
Only First Four Minutes of Call Recorded - Ong’s call will last over 25 minutes, ending at around 8:44 a.m. or 8:45 a.m. (see (8:43 a.m.) September 11, 2001), and in it Ong will relay crucial information about what is happening on her plane. [9/11 Commission, 8/26/2004, pp. 8 pdf file; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006] However, only the first four minutes of the call are recorded. This is because the recently installed recording system at the reservations office has a default time limit. The recording system it replaced did not have such a time limit. [9/11 Commission, 11/19/2003 pdf file; 9/11 Commission, 8/26/2004, pp. 8 pdf file]

Entity Tags: Betty Ong, Nydia Gonzalez, American Airlines, Vanessa Minter, Winston Sadler

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Betty Ong.Betty Ong. [Source: The Eagle-Tribune]Betty Ong, a flight attendant on Flight 11, begins relaying information about the trouble on her plane to employees at the American Airlines Southeastern Reservations Office in Cary, North Carolina. [9/11 Commission, 7/24/2004, pp. 5] Ong has just called the reservations office to report the hijacking of Flight 11, and is on the line with two employees there: Vanessa Minter and Winston Sadler (see 8:18 a.m. September 11, 2001). [Federal Bureau of Investigation, 9/12/2001, pp. 38-41; 9/11 Commission, 7/24/2004, pp. 453]
Ong Describes Hijacking but Gives Wrong Flight Number - Ong tells Minter and Sadler: “The cockpit’s not answering, somebody’s stabbed in business class, and I think there’s Mace, that we can’t breathe.… I think we’re getting hijacked.” Sadler asks Ong what flight she is on and Ong replies, incorrectly, “Flight 12.” She says her plane just left Boston and is supposed to go to Los Angeles, and the pilots are not answering the phone in the cockpit. She says she is in the jump seat, 3R, which is at the back of the plane, behind the coach section. [American Airlines, 9/11/2001, pp. 3-6; 9/11 Commission, 8/26/2004, pp. 6, 8 pdf file] However, Amy Sweeney, another flight attendant who makes a call from Flight 11, is in the next-to-last row of passenger seats in the coach section of the plane, and she will say that Ong is sitting next to her (see (8:32 a.m.-8:44 a.m.) September 11, 2001). [New York Observer, 2/15/2004; New York Observer, 6/20/2004; 9/11 Commission, 8/26/2004, pp. 11 pdf file]
Ong Says Two Flight Attendants Stabbed - Sadler asks Ong her name and she replies: “My name is Betty Ong. I’m number three [flight attendant] on Flight 11.” She says the number one flight attendant and the number five flight attendant have been stabbed. [American Airlines, 9/11/2001, pp. 3-6] These two attendants are Barbara Arestegui and Karen Martin. [9/11 Commission, 8/26/2004, pp. 6 pdf file] Ong says, “Nobody knows who stabbed who and we can’t even get up to business class right now, ‘cause nobody can breathe.” She also says: “We can’t get into the cockpit. The door won’t open.” [American Airlines, 9/11/2001, pp. 3-6] Sadler takes notes of the call, using his computer “scratch pad.” [Federal Bureau of Investigation, 9/12/2001, pp. 42-44] He notifies Ong of this, saying, “I’m taking it down, all the information.” He tells Ong, “We’re also, you know, of course, recording this.” [American Airlines, 9/11/2001, pp. 3-6]
Ong Receiving Details of Hijacking from Colleague - During the entire conversation, Sadler will later recall, Ong seems to be talking to someone in the background and receiving information from them. [Federal Bureau of Investigation, 9/12/2001, pp. 42-44] This person is presumably Sara Low, another of the flight attendants, who was assigned to the front of the plane and so would have witnessed the hijacking when it happened. [Associated Press, 3/5/2009; New York Daily News, 3/6/2009; Arkansas Democrat-Gazette, 9/11/2011] Ong will keep repeating herself during the call, Minter will recall, such as repeatedly mentioning the stabbings on her plane. [Federal Bureau of Investigation, 9/12/2001, pp. 38-41] Nydia Gonzalez, a supervisor at the reservations office, has been alerted to the call and will soon join it (see 8:21 a.m. September 11, 2001). [9/11 Commission, 11/19/2003 pdf file; 9/11 Commission, 7/24/2004, pp. 453]

Entity Tags: Betty Ong, American Airlines, Winston Sadler, Vanessa Minter

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Daniel Lewin.Daniel Lewin. [Source: Akamai Technologies]An FAA memo written on the evening of 9/11, and later leaked, will suggest that a man on Flight 11 is shot and killed by a gun before the plane crashes into the World Trade Center. The “Executive Summary,” based on information relayed by a flight attendant to the American Airlines Operation Center, states “that a passenger located in seat 10B [Satam Al Suqami] shot and killed a passenger in seat 9B [Daniel Lewin] at 9:20 a.m.” (Note that since Flight 11 crashes at 8:46, the time must be a typographical error, probably meaning 8:20). A report in Israeli newspaper Ha’aretz on September 17 will identify Lewin as a former member of the Israel Defense Force Sayeret Matkal, Israel’s most successful Special Operations unit. [United Press International, 3/6/2002] Sayeret Matkal is a deep penetration unit that has been involved in assassinations, the theft of foreign signals intelligence materials, and the theft and destruction of foreign nuclear weaponry. It is best known for the 1976 rescue of 106 passengers at Entebbe Airport in Uganda. [New Yorker, 10/29/2001] Lewin founded Akamai, a successful computer company, and his connections to Sayeret Matkal will remain hidden until the gun story becomes known. [Guardian, 9/15/2001] FAA and American Airline officials will later deny the gun story and suggest that Lewin is probably stabbed to death instead. [Washington Post, 3/2/2002; United Press International, 3/6/2002] Officials assert that the leaked document was a “first draft,” and subsequently corrected, but decline to release the final draft, calling it “protected information.” However, an FAA official present when the memo is drafted will dispute the FAA’s claim, asserting that “[t]he document was reviewed for accuracy by a number of people in the room, including myself and a couple of managers of the operations center.” [WorldNetDaily, 3/7/2002] This unnamed official is probably Bogdan Dzakovic, a leader of the FAA’s “red team” conducting covert security inspections. He will later tell the 9/11 Commission: “There are serious indications that the FAA deceived the public about what happened on 9/11. On the afternoon of September 11, 2001, I was working in one of the FAA operations centers collecting information on details of what happened during the hijacking. We received information that a firearm was used on one of the hijacked aircraft.… That evening the administrator of FAA requested an executive summary covering the day’s activities, and this information about a gun was included in the summary. Days later, without any explanation or questioning of the summary’s author, the administrator publicly announced that no guns had been used in the hijacking. Several months passed when the press re-surfaced this issue. FAA’s initial response was that no so such executive summary existed. Later, when confronted with the document, FAA admitted the executive summary existed, but denied its accuracy. Sometime later I learned that another operations center also received a report that a firearm was used.… There were also reports of a possible explosive threatened on a flight.” [CBS News, 2/25/2002; 9/11 Commission, 5/22/2003; Village Voice, 2/8/2005]

Entity Tags: American Airlines, Bogdan Dzakovic, Satam Al Suqami, Sayeret Matkal, Daniel Lewin, Federal Aviation Administration

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Nydia Gonzalez.Nydia Gonzalez. [Source: 9/11 Commission]Nydia Gonzalez, a supervisor at the American Airlines Southeastern Reservations Office in Cary, North Carolina, joins a phone call between two employees at her office and Betty Ong, a flight attendant on the hijacked Flight 11. [9/11 Commission, 8/26/2004, pp. 8-9 pdf file] Ong called the reservations office at 8:18 a.m. to report the hijacking (see 8:18 a.m. September 11, 2001), and has since then been talking to two employees there: Vanessa Minter and Winston Sadler. Sadler pushed the emergency button on his phone to alert personnel in the operations area of the reservations office, so that one of them could pick up the call from Ong. A colleague of Gonzalez’s initially picked up the call, but Gonzalez quickly takes over from them. [Federal Bureau of Investigation, 9/12/2001, pp. 38-41; 9/11 Commission, 7/24/2004, pp. 453; US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006] Gonzalez, Minter, and Sadler are in different areas of the reservations office, but all three of them are able to monitor Ong’s call. [9/11 Commission, 11/19/2003 pdf file]
Supervisor Told of Stabbings on Flight 11 - The first thing Gonzalez says when she joins the call is: “This is operations. What flight number are we talking about?” Ong earlier told Minter and Sadler, incorrectly, that she was on “Flight 12,” not Flight 11 (see 8:19 a.m. September 11, 2001). Sadler therefore tells Gonzalez, “Flight 12.” Ong quickly corrects him, saying: “We’re on Flight 11 right now. This is Flight 11.… Boston to Los Angeles.” She also repeats information she previously gave to Minter and Sadler, saying, “Our number one [flight attendant] has been stabbed and our [number] five [flight attendant] has been stabbed.” [American Airlines, 9/11/2001, pp. 3-6]
Supervisor Notifies Airline's Operations Center - Gonzalez is an operations specialist, and her responsibilities include monitoring any emergency situations with American Airlines flights and forwarding information to the American Airlines System Operations Control (SOC) center in Fort Worth, Texas. [9/11 Commission, 1/27/2004 pdf file; Spencer, 2008, pp. 17] She immediately realizes the seriousness of the situation on Flight 11 and therefore, while remaining connected to Ong’s call, phones the SOC on a separate line to notify it of the problem (see (8:21 a.m.) September 11, 2001). [9/11 Commission, 11/19/2003 pdf file; 9/11 Commission, 8/26/2004, pp. 9 pdf file] Gonzalez will later recall that she finds Ong to be “calm, professional, and in control throughout the call.” [9/11 Commission, 1/27/2004 pdf file] She will also say that during the time she is monitoring Ong’s call, she does not hear much commotion in the background. [Federal Bureau of Investigation, 9/12/2001, pp. 69-71]

Entity Tags: Betty Ong, Nydia Gonzalez, Winston Sadler, Vanessa Minter, American Airlines

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Betty Ong, a flight attendant on Flight 11, tells American Airlines employees on the ground the seat numbers of two hijackers who have gained unauthorized access to the cockpit of her plane. [American Airlines, 9/11/2001, pp. 7-19; 9/11 Commission, 7/24/2004, pp. 6] Ong is on the phone with three members of staff at the American Airlines Southeastern Reservations Office in North Carolina, and has been describing to them the trouble on her plane. [Federal Bureau of Investigation, 9/12/2001, pp. 38-41; 9/11 Commission, 8/26/2004, pp. 8 pdf file] She previously said she thought that two hijackers had forced their way into the cockpit, but could provide no description of them (see 8:22 a.m.-8:24 a.m. September 11, 2001). [American Airlines, 9/11/2001, pp. 3-6; American Airlines, 9/11/2001, pp. 7-19; Federal Bureau of Investigation, 9/12/2001, pp. 69-71]
Ong Provides Hijackers' Seat Numbers - Nydia Gonzalez, one of the reservations office employees, now asks Ong: “Do you know any information as far as the gents, the men that are in the cockpit with the pilots. Were they from first class?” Ong replies that the men were in seats 2A and 2B. [American Airlines, 9/11/2001, pp. 7-19] These seats, in the first class section of the plane, were occupied by hijackers Wail Alshehri and Waleed Alshehri. Ong would not have seen these two men, as she is at the back of the plane. [9/11 Commission, 11/19/2003 pdf file; 9/11 Commission, 8/26/2004, pp. 6 pdf file] However, the reservations office employees gain the impression that she is getting information from someone else, such as another flight attendant. [Federal Bureau of Investigation, 9/12/2001, pp. 38-41; Federal Bureau of Investigation, 9/12/2001, pp. 42-44; Federal Bureau of Investigation, 9/12/2001, pp. 69-71]
Gonzalez Relays Information to Airline Operations Center - Gonzalez has been passing on the information Ong provides to Craig Marquis, a manager at the American Airlines System Operations Control (SOC) center in Texas (see (8:21 a.m.) September 11, 2001). [9/11 Commission, 8/26/2004, pp. 9 pdf file; Spencer, 2008, pp. 17-18] She has just told Marquis that, according to Ong, the “number five” flight attendant on Flight 11—Barbara Arestegui—has been stabbed, but “seems to be breathing,” and the “number one” flight attendant—Karen Martin—has been “stabbed pretty badly, and she’s lying down on the floor,” possibly unconscious. The other flight attendants are at the back of the plane with Ong, Gonzalez said. Gonzalez also told Marquis that the passengers in the coach section “might not be aware of what’s going on right now,” meaning they are unaware that their plane has been hijacked.
Ong Says Pilots Made No Announcements - Gonzalez now relays to Marquis the hijackers’ seat numbers that Ong provided, and adds that the two hijackers “are in the cockpit with the pilots.” She then returns to her conversation with Ong. She asks if the pilots have “made any announcements on the PA system.” [American Airlines, 9/11/2001, pp. 7-19] Ong says there have been no announcements. [Federal Bureau of Investigation, 9/12/2001, pp. 38-41; Federal Bureau of Investigation, 9/12/2001, pp. 69-71] Gonzalez then asks if Flight 11 is “still flying erratically” (see 8:25 a.m. September 11, 2001). Ong says that “right now it’s more or less stabilized.” [American Airlines, 9/11/2001, pp. 7-19] Later during her call with the reservations office, Ong will provide the seat number of a third hijacker on her plane (see 8:35 a.m.-8:36 a.m. September 11, 2001). [9/11 Commission, 8/26/2004, pp. 12 pdf file]

Entity Tags: Nydia Gonzalez, American Airlines, Craig Marquis, Betty Ong

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Gerard Arpey.Gerard Arpey. [Source: American Airlines]Gerard Arpey, American Airlines’ executive vice president of operations, learns of the trouble on Flight 11 and then heads to the airline’s System Operations Control (SOC) center, but he is unable to contact the airline’s president to alert him to the crisis at this time. [9/11 Commission, 1/8/2004 pdf file]
Arpey Told about Call from Flight Attendant - At around 8:30 a.m., Arpey, who is in his office at American Airlines’ headquarters in Fort Worth, Texas, makes a routine phone call to the nearby SOC. [9/11 Commission, 1/27/2004; 9/11 Commission, 8/26/2004, pp. 12 pdf file] The call is answered by Joseph Bertapelle, the manager of SOC operations coordination/air traffic systems. [9/11 Commission, 1/8/2004 pdf file] Bertapelle tells Arpey about a phone call the airline has received from Betty Ong, a flight attendant on the hijacked Flight 11. [9/11 Commission, 1/27/2004; 9/11 Commission, 8/26/2004, pp. 12 pdf file] Since 8:18 a.m., Ong has been on the phone with employees at the American Airlines Southeastern Reservations Office in North Carolina (see 8:18 a.m. September 11, 2001), and one of those employees has been relaying the information Ong provides to Craig Marquis, the manager on duty at the SOC (see (8:21 a.m.) September 11, 2001). [9/11 Commission, 11/19/2003 pdf file; 9/11 Commission, 8/26/2004, pp. 8-9 pdf file]
Arpey Wonders if Ong's Call Is Genuine - Bertapelle tells Arpey that Marquis has learned that Ong said there were “bad guys” on her plane and a flight attendant had been stabbed. Arpey wonders if the call from Ong is genuine. Considering the number of “crank” calls the airline receives, he will later comment, he is “conditioned to be somewhat skeptical.” However, when Bertapelle says Ong has reported a cockpit intrusion (see 8:22 a.m.-8:24 a.m. September 11, 2001), this information makes Arpey think “that the incident could be the real thing.”
Arpey Unable to Reach Airline's President - Immediately after the call with Bertapelle ends, Arpey tries calling Don Carty, the president of American Airlines, to let him know what is happening. [9/11 Commission, 1/8/2004 pdf file; 9/11 Commission, 8/26/2004, pp. 12 pdf file] But Carty is at home answering e-mails and so has not yet arrived at his office. Arpey therefore leaves a message, requesting that Carty call him as soon as possible.
Arpey Heads to Operations Center, Learns Details of Hijacking - Arpey briefs his executive assistant on what he has learned about the trouble on Flight 11. [Wall Street Journal, 10/15/2001; 9/11 Commission, 1/27/2004] He then heads to the SOC, along with Dan Huffman, American Airlines’ senior vice president of maintenance and engineering. [9/11 Commission, 1/8/2004 pdf file] The SOC is about a mile away from the airline’s headquarters, and Arpey will recall that he arrives there at between 8:35 a.m. and 8:40 a.m. After he reaches the SOC, managers there tell him they are now treating Flight 11 as a confirmed hijacking. Arpey is told that the plane’s pilots are still not responding to calls from the flight attendants and that Ong said a passenger in first class had been stabbed, possibly fatally (see 8:33 a.m. September 11, 2001). He learns that the FAA has notified the airline that, instead of heading west on its intended flight path, Flight 11 is heading south; the plane’s transponder has been turned off; and the pilots are not responding to radio calls (see 8:29 a.m. September 11, 2001). [9/11 Commission, 1/27/2004] Arpey also learns that airline managers are setting up the System Operations Command Center in order to deal with the emergency (see (Between 8:40 a.m. and 8:55 a.m.) September 11, 2001), and because they are doing this, he will say, he “knew that they had concluded the incident was real.” [9/11 Commission, 1/8/2004 pdf file; 9/11 Commission, 8/26/2004, pp. 12 pdf file] As executive vice president of operations, Arpey is responsible for American Airlines’ worldwide flight operations, and he will therefore be directly involved in the airline’s subsequent emergency response efforts and other operational decisions throughout the day. [9/11 Commission, 1/27/2004]

Entity Tags: Gerard Arpey, Don Carty, Dan Huffman, American Airlines, Joseph Bertapelle

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Nydia Gonzalez, a supervisor at the American Airlines Southeastern Reservations Office in Cary, North Carolina, tells colleagues of hers to keep the information they have received about the hijacking of Flight 11 to themselves. [American Airlines, 9/11/2001, pp. 7-19] Gonzalez and two of her colleagues—Vanessa Minter and Winston Sadler—are on the phone with Betty Ong, a flight attendant on Flight 11 who called the reservations office to report the hijacking of her plane (see 8:18 a.m. September 11, 2001, 8:19 a.m. September 11, 2001, and 8:21 a.m. September 11, 2001). [Federal Bureau of Investigation, 9/12/2001, pp. 38-41; 9/11 Commission, 7/24/2004, pp. 5, 453] Gonzalez reassures Ong, telling her, “Okay, sweetie… we’ve got security working on [dealing with the hijacking] right now.” [American Airlines, 9/11/2001, pp. 7-19] (Gonzalez is referring to the fact that she has contacted the American Airlines System Operations Control center in Texas and alerted it to the trouble on Flight 11 (see (8:21 a.m.) September 11, 2001). [9/11 Commission, 8/26/2004, pp. 9 pdf file] ) Gonzalez adds, “We’re gonna maintain this line open as much as we can.” Presumably addressing all of the other participants in the call—Ong, Minter, and Sadler—she then says: “We don’t want to spread anything around. Okay?” The others apparently agree to keep quiet about the hijacking, as Gonzalez responds to them, “Excellent.” [American Airlines, 9/11/2001, pp. 7-19]

Entity Tags: Winston Sadler, Nydia Gonzalez, Vanessa Minter, Betty Ong

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Betty Ong, a flight attendant on Flight 11, tells American Airlines employees on the ground that a passenger on her plane has been stabbed and may be dead. [American Airlines, 9/11/2001, pp. 7-19; 9/11 Commission, 8/26/2004, pp. 12 pdf file] Ong is on the phone with three members of staff at the American Airlines Southeastern Reservations Office in North Carolina. [Federal Bureau of Investigation, 9/12/2001, pp. 38-41; 9/11 Commission, 7/24/2004, pp. 5, 453]
Ong Names Passenger Who May Have Been 'Fatally Wounded' - One of them, Nydia Gonzalez, asks Ong if the first class section of her plane was full when the flight was hijacked. She then asks, “Do we know how the passengers up there [in first class] are doing, if any of the passengers got hurt?” [American Airlines, 9/11/2001, pp. 7-19] When she first reached the reservations office, Ong mentioned that somebody had been “stabbed in business class,” but gave no further details about the stabbing (see 8:19 a.m. September 11, 2001). [American Airlines, 9/11/2001, pp. 3-6; 9/11 Commission, 8/26/2004, pp. 8 pdf file] Now, Gonzalez will later recall, Ong says she has been “informed by other flight attendants that a passenger by the name of Daniel Lewin may have been fatally wounded” (see (8:20 a.m.) September 11, 2001). [Federal Bureau of Investigation, 9/12/2001, pp. 69-71] This is “the first indication” that authorities on the ground receive “of a fatality on board” Flight 11, according to the 9/11 Commission. [9/11 Commission, 8/26/2004, pp. 12 pdf file] Gonzalez asks, “One of our passengers is?” She then checks with Ong, “So just, you know of just one [passenger] that got stabbed?” [American Airlines, 9/11/2001, pp. 7-19]
Gonzalez Passes on News of Fatality to Airline Operations Center - Gonzalez has been relaying the information Ong provides to Craig Marquis, the manager on duty at the American Airlines System Operations Control center in Texas, on another phone line (see (8:21 a.m.) September 11, 2001). [9/11 Commission, 11/19/2003 pdf file; Spencer, 2008, pp. 17-18] She immediately passes on the new information. Gonzalez tells Marquis: “They think they might have a fatality on the flight. One of our passengers, possibly on [seat] 9B, Levin or Lewin, might have been fatally stabbed.” She says, “I was just asking about how [the] first class passengers were doing, and [Ong] mentioned that there might be one that they think might be fatally stabbed.” Gonzalez then returns to her conversation with Ong (see 8:35 a.m.-8:36 a.m. September 11, 2001). [American Airlines, 9/11/2001, pp. 7-19; 9/11 Commission, 8/26/2004, pp. 12 pdf file]

Entity Tags: Daniel Lewin, Craig Marquis, American Airlines, Betty Ong, Nydia Gonzalez

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Ray Scott, a manager at the American Airlines Southeastern Reservations Office in Cary, North Carolina, joins a phone call that his office has received from Betty Ong, a flight attendant on the hijacked Flight 11. [Federal Bureau of Investigation, 9/12/2001, pp. 64-65] Since 8:18 a.m., Ong has been on the phone with employees at the reservations office and has been describing to them the trouble on her plane (see 8:18 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 5] Scott was alerted to this, being told that an employee at the reservations office was handling an emergency phone call concerned with a hijacking. He went to the desk of reservation agent Vanessa Minter, one of the employees participating in the call, and now takes her place on the call.
Scott Listens but Does Not Say Anything - After joining the call, Scott does not say anything to Ong. Instead, he just listens while Nydia Gonzalez, a supervisor at the reservations office, does the talking. Minter remains with Scott after he takes her place on the call. Scott will stay on the call with Ong until it ends.
Scott Delayed before Joining Call - Minter will later recall that there was a delay before Scott was able to take over from her. She will say that after he arrived at her desk, she gave Scott her headset. However, he was unable to use it as it has an earpiece that was custom-made for Minter. Scott therefore had to go away and get his own headset, and is only able to join the call with Ong after returning to Minter’s desk with it.
Accounts Conflict over When Scott Joins Call - The time at which Scott joins the call with Ong is unclear. Minter will estimate that she participates in the call for over 20 minutes before Scott takes over from her. This would mean Scott joins it sometime after 8:38 a.m. But Scott will estimate that he listens to about the last 10 minutes of the conversation with Ong. Since the call ends at around 8:44 a.m. or 8:45 a.m. (see (8:43 a.m.) September 11, 2001), this would mean he joins it at around 8:34 a.m., or shortly after. Scott will also say that he is listening to the call when Ong says a passenger who was in seat 10B is now in the cockpit. [Federal Bureau of Investigation, 9/12/2001, pp. 38-41; Federal Bureau of Investigation, 9/12/2001, pp. 64-65] This would mean he is already participating in the call by 8:35 a.m., when Ong provides this information (see 8:35 a.m.-8:36 a.m. September 11, 2001). [9/11 Commission, 8/26/2004, pp. 12 pdf file]

Entity Tags: Vanessa Minter, Nydia Gonzalez, Ray C. Scott, Betty Ong

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Betty Ong, a flight attendant on Flight 11, tells American Airlines employees on the ground the name and seat number of a hijacker who is in the cockpit of her plane and is likely responsible for stabbing a passenger. [American Airlines, 9/11/2001, pp. 7-19; 9/11 Commission, 8/26/2004, pp. 12 pdf file] Ong has, since 8:18 a.m., been on the phone with employees at the American Airlines Southeastern Reservations Office in Cary, North Carolina, and has been describing to them the trouble on her plane (see 8:18 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 5] She previously provided the seat numbers of two hijackers who, she said, were in the cockpit (see 8:28 a.m. September 11, 2001). She now gives details of a third hijacker who she also says is in the cockpit.
Ong Says Hijacker 'Tom Sukani' Is in the Cockpit - Nydia Gonzalez, one of the reservations office employees talking with Ong, asks about this hijacker. She says to Ong, “He’s the one that’s in the, he’s in the cockpit,” and then asks: “You said ‘Tom Sukani?‘… And he was in [seat] 10B.” [American Airlines, 9/11/2001, pp. 7-19; 9/11 Commission, 8/26/2004, pp. 12 pdf file] “Tom Sukani” is presumably Satam Al Suqami, and either Ong has mispronounced his name or Gonzalez has misheard it. Al Suqami was assigned to seat 10B. [9/11 Commission, 8/26/2004, pp. 6 pdf file] Gonzalez continues, saying, “Okay, so he’s one of the persons that are in the cockpit.” She then asks Ong, “And as far as weapons, all they have are just knives?” [American Airlines, 9/11/2001, pp. 7-19; 9/11 Commission, 8/26/2004, pp. 12 pdf file]
Gonzalez Relays Hijacker's Details to Operations Center - Gonzalez has been relaying the information Ong provides to Craig Marquis, the manager on duty at the American Airlines System Operations Control center in Texas, on another phone line (see (8:21 a.m.) September 11, 2001). [9/11 Commission, 11/19/2003 pdf file; Spencer, 2008, pp. 17-18] She now passes on Ong’s latest information. She tells Marquis, “Apparently, one of the passengers that’s in the cockpit: the name that they got was Tom Al Zukani and he was in [seat] 10B, not 9A and B as they previously stated.”
Ong Gives Details of Stabbed Passenger - Gonzalez then asks Ong about the details of a passenger who was stabbed. Ong previously mentioned that Daniel Lewin had been stabbed and may have died (see 8:19 a.m. September 11, 2001 and 8:33 a.m. September 11, 2001). [American Airlines, 9/11/2001, pp. 3-6; American Airlines, 9/11/2001, pp. 7-19; Federal Bureau of Investigation, 9/12/2001, pp. 69-71] Lewin had been seated directly in front of Al Suqami, and so, according to the 9/11 Commission Report, Al Suqami was “probably” the hijacker who stabbed him (see (8:20 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 5] After checking Lewin’s details, Gonzalez passes on the information to Marquis, albeit stating Lewin’s first name incorrectly. She tells Marquis, “Okay, and the passenger that got hurt was [in seat] 9B, David Lewin.” [American Airlines, 9/11/2001, pp. 7-19]
Marquis Thinks Hijacker Has a Swiss Army Knife - Presumably referring to this latest information from Ong, Marquis will later tell the FBI that when he learns that Al Suqami is armed with a knife, he thinks “that the knife might have been a Swiss Army knife of some sort, because it was not that uncommon for passengers to have these.” [Federal Bureau of Investigation, 9/11/2001, pp. 49-51] After receiving the information about Al Suqami being in the cockpit, Marquis initiates procedures to “lockout” Flight 11 (see 8:36 a.m.-8:38 a.m. September 11, 2001). [9/11 Commission, 11/19/2003 pdf file; 9/11 Commission, 8/26/2004, pp. 12 pdf file]

Entity Tags: Nydia Gonzalez, American Airlines, Betty Ong, Craig Marquis

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Flight attendants Karen Martin and Barbara Arestegui.Flight attendants Karen Martin and Barbara Arestegui. [Source: Family photos]Betty Ong, a flight attendant on the hijacked Flight 11, tells American Airlines employees on the ground that there are no doctors on her plane who could help the injured crew members, and this information leads an airline manager to decide that he wants Flight 11 to land at the next available airport. [American Airlines, 9/11/2001, pp. 7-19; Federal Bureau of Investigation, 9/11/2001, pp. 49-51; 9/11 Commission, 1/27/2004 pdf file] Ong is on the phone with employees at the American Airlines Southeastern Reservations Office in North Carolina (see 8:18 a.m. September 11, 2001). [9/11 Commission, 8/26/2004, pp. 8 pdf file] She previously told them that the “number one” flight attendant on her plane—Karen Martin—and the “number five” flight attendant—Barbara Arestegui—had been stabbed (see 8:19 a.m. September 11, 2001 and 8:21 a.m. September 11, 2001). [American Airlines, 9/11/2001, pp. 3-6]
Ong Confirms that Stabbed Flight Attendant Is on Oxygen - Nydia Gonzalez, one of the reservations office employees talking to Ong, asks, “So the number one flight attendant—the one that was stabbed—she’s on oxygen right now?” [American Airlines, 9/11/2001, pp. 7-19] Ong says that other crew members have been “able to administer oxygen” to Martin and that Martin is “able to breathe,” Gonzalez will later recall. [Federal Bureau of Investigation, 9/12/2001, pp. 69-71; 9/11 Commission, 1/27/2004 pdf file] Gonzalez then asks, “And the number five: that was a superficial wound, you were saying?” [American Airlines, 9/11/2001, pp. 7-19] Ong says the number five flight attendant’s injury is less serious. [Federal Bureau of Investigation, 9/12/2001, pp. 69-71]
Ong Says There Is No Doctor on Flight 11 - While she is on the phone with Ong, Gonzalez has been relaying the information Ong provides to Craig Marquis, the manager on duty at the American Airlines System Operations Control center in Texas, on another phone line (see (8:21 a.m.) September 11, 2001). [9/11 Commission, 11/19/2003 pdf file; Spencer, 2008, pp. 17-18] Marquis now requests that Gonzalez ask Ong a question. He says to Gonzalez: “Who’s helping them? Is there a doctor on board?” Gonzalez passes on Marquis’s question, asking Ong, “Is there a doctor on board, Betty, that’s assisting you guys?” [American Airlines, 9/11/2001, pp. 7-19] Ong indicates that there isn’t a doctor on Flight 11. [9/11 Commission, 1/27/2004 pdf file]
Marquis Wants Flight 11 to Land - Marquis will tell the FBI that because there is “no doctor on board Flight 11 to help the injured,” he wants “the aircraft to land at the next available airport.” Because of “the medical emergencies and the violence” on the plane, Marquis will say, he intends “for medical personnel and law enforcement to meet the aircraft as soon as it landed.” [Federal Bureau of Investigation, 9/11/2001, pp. 49-51]

Entity Tags: Nydia Gonzalez, Craig Marquis, Betty Ong, American Airlines

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Betty Ong, a flight attendant on the hijacked Flight 11, tells American Airlines employees on the ground that her plane is flying erratically, and then says it is in a rapid descent. [American Airlines, 9/11/2001, pp. 7-19; 9/11 Commission, 8/26/2004, pp. 13 pdf file] Ong is on the phone with employees at the American Airlines Southeastern Reservations Office in North Carolina (see 8:18 a.m. September 11, 2001). One of these employees, Nydia Gonzalez, is simultaneously relaying the information Ong provides to Craig Marquis, the manager on duty at the American Airlines System Operations Control (SOC) center in Texas (see (8:21 a.m.) September 11, 2001). [9/11 Commission, 11/19/2003 pdf file; 9/11 Commission, 8/26/2004, pp. 8-9 pdf file] Ong reports that all of the passengers on Flight 11 have been moved out of the first class section of the plane, back to the coach section. Gonzalez passes this information on to Marquis.
Ong Says Flight 11 Is 'Flying Sideways' - Gonzalez then asks Ong, “What’s going on honey?” Ong previously mentioned that Flight 11 was flying erratically (see 8:25 a.m. September 11, 2001), but she subsequently said it had stabilized (see 8:28 a.m. September 11, 2001). She now says the plane is flying erratically again. [American Airlines, 9/11/2001, pp. 7-19; 9/11 Commission, 8/26/2004, pp. 13 pdf file] Vanessa Minter, an employee at the reservations office, will later recall that Ong describes the way the plane is being flown by saying it is “flying sideways.” According to Minter, another reservations office employee, Winston Sadler, then asks Ong if she means the plane is flying erratically and Ong says yes. [Federal Bureau of Investigation, 9/12/2001, pp. 38-41] Gonzalez will similarly recall that Ong says the plane is “flying sideways, erratically.” [Federal Bureau of Investigation, 9/12/2001, pp. 69-71] Gonzalez relays the information to Marquis, telling him, “The aircraft is erratic again, flying very erratically.”
Ong Says Flight 11 Is in a Rapid Descent - About a minute later, Gonzalez again asks Ong, “What’s going on?” [American Airlines, 9/11/2001, pp. 7-19] Ong says her plane is descending rapidly. [Federal Bureau of Investigation, 9/11/2001, pp. 1-8; Federal Bureau of Investigation, 9/12/2001, pp. 69-71] Gonzalez passes this information on to Marquis, telling him, “Seems like the aircraft is descending quite a bit right now.” Marquis replies, “Okay, I have it on the radar here.” Marquis then asks Bill Halleck, an air traffic control specialist at the SOC, if Flight 11 is descending. [American Airlines, 9/11/2001, pp. 7-19; 9/11 Commission, 11/19/2003 pdf file] When Halleck recently contacted the FAA’s Boston Center, he was told that air traffic controllers had lost Flight 11’s transponder signal (see 8:29 a.m. September 11, 2001). [9/11 Commission, 3/25/2004, pp. 15] He therefore tells Marquis: “We don’t know [if Flight 11 is descending]. The transponder is off, so we have no active read on him.” [American Airlines, 9/11/2001, pp. 7-19; 9/11 Commission, 11/19/2003 pdf file]

Entity Tags: Betty Ong, American Airlines, Vanessa Minter, Bill Halleck, Nydia Gonzalez, Craig Marquis, Winston Sadler

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Nancy Wyatt, a manager at the American Airlines flight services office at Logan International Airport in Boston, talks on the phone with an employee at the American Airlines System Operations Control (SOC) center, and passes on to them information that is being provided by a flight attendant on the hijacked Flight 11, but the SOC employee advises Wyatt to keep quiet about the hijacking. [American Airlines, 9/11/2001, pp. 34-41; 9/11 Commission, 2004, pp. 4; 9/11 Commission, 8/26/2004, pp. 14 pdf file; Rutgers Law Review, 9/7/2011, pp. 14 pdf file] Amy Sweeney, a flight attendant on Flight 11, called the flight services office at 8:32 a.m., and has since then been providing details of the trouble on her plane to Michael Woodward, an American Airlines flight services manager at Logan Airport (see (8:32 a.m.-8:44 a.m.) September 11, 2001). [9/11 Commission, 8/26/2004, pp. 11 pdf file]
Wyatt Passes on Details of Call in Real Time - Wyatt, who, like Woodward, is an American Airlines flight services manager, calls the American Airlines SOC in Fort Worth, Texas, at 8:40 a.m. Her call is answered by Ray Howland. [Federal Bureau of Investigation, 9/15/2001, pp. 2-4; 9/11 Commission, 2004, pp. 4; 9/11 Commission, 8/26/2004, pp. 14 pdf file] During the call, Wyatt is able to pass on information to Howland in real time, because she is standing next to Woodward and so is hearing his side of the conversation with Sweeney, and she is also able to read the notes he is taking, based on what Sweeney tells him. [9/11 Commission, 1/25/2004 pdf file]
Wyatt Unclear about Name of Flight Attendant - Wyatt is unclear about the identity of the flight attendant Woodward is talking to. At the start of the call with Howland, she says, “We’ve got the flight attendants on the line here.” A couple of minutes later, she says, “We’ve got… Betty Ong, the purser, on the line.” [American Airlines, 9/11/2001, pp. 34-41] However, Ong is currently on the phone with the American Airlines Southeastern Reservations Office in North Carolina (see 8:18 a.m. September 11, 2001). [9/11 Commission, 8/26/2004, pp. 8 pdf file] Finally, another couple of minutes later and after checking with Woodward, Wyatt tells Howland, “Amy Sweeney is on the phone.”
Wyatt Passes on Hijackers' Seat Numbers - Based on Sweeney’s information, Wyatt says that Flight 11 “is in a rapid descent.” She tells Howland that the hijackers were in seats 9D, 9G, and 10B, and she says one of them “speaks no English.” She also reports, several minutes into the call, that the hijackers are “in the cockpit.” Wyatt tells Howland that two flight attendants, Karen Martin and Barbara Arestegui, have been stabbed. [American Airlines, 9/11/2001, pp. 34-41] Referring to passenger Daniel Lewin, who was attacked by one of the hijackers (see (8:20 a.m.) September 11, 2001), she says: “There is severe bleeding. There is a slashed throat.” She subsequently says, “There is a passenger also injured.” [American Airlines, 9/11/2001, pp. 34-41; WBUR, 9/8/2011]
Airline Wants Information Withheld from Plane's Crew - During the call, Howland tells Wyatt that the SOC wants some information to be withheld from Sweeney and the other crew members on Flight 11. After Wyatt says the flight attendants on Flight 11 “are concerned” because they “don’t know what’s going on in the cockpit,” Howland replies that the SOC is “trying to get in contact with the cockpit,” but then says, “We don’t really want to tell [Sweeney] that.” Wyatt confirms: “Okay, don’t. Okay, okay. Got it.” And when Wyatt later asks: “Do we know where that plane is going to right now?” Howland replies: “We don’t know.… [I]t looks like it’s going to JFK” International Airport in New York, but he then says: “I mean, we don’t really want to give a whole lot of information to that flight. Okay?” Wyatt confirms: “Okay, we’re not. We’re not giving them that information to that flight.”
Airline Employees Told to Keep Quiet about Hijacking - Wyatt and Howland also want American Airlines employees on the ground to keep quiet about the hijacking. At about 8:46 a.m., while she is still on the phone with Howland, Wyatt says to a colleague of hers: “Evelyn, don’t mention this to anyone. Me, you, Beth. Just the five of us. Okay?” [American Airlines, 9/11/2001, pp. 34-41] (“Evelyn” and “Beth” are Evelyn Nunez and Elizabeth Williams, two American Airlines employees at Logan Airport. [Federal Bureau of Investigation, 9/11/2001, pp. 57-58; Federal Bureau of Investigation, 9/13/2001, pp. 3-4; 9/11 Commission, 1/25/2004 pdf file] ) Near the end of her call with Howland, Wyatt asks, “What do you want us to do as far as just keeping our mouths shut and not… ?” Howland answers simply, “That’s basically it.” [American Airlines, 9/11/2001, pp. 34-41] Wyatt notifies Howland when the call from Sweeney gets disconnected, at around 8:45 a.m. (see (8:44 a.m.) September 11, 2001). [9/11 Commission, 8/26/2004, pp. 14 pdf file] Her call with Howland ends at 8:48 a.m. [9/11 Commission, 2004, pp. 4]

Entity Tags: Evelyn Nunez, American Airlines, Madeline (“Amy”) Sweeney, Elizabeth D. Williams, Nancy Wyatt, Ray Howland, Michael Woodward

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Employees at the American Airlines Southeastern Reservations Office in Cary, North Carolina, lose communication with Betty Ong, a flight attendant on the hijacked Flight 11. [American Airlines, 9/11/2001, pp. 20-22; 9/11 Commission, 7/24/2004, pp. 5-6]
Ong Stops Responding to Questions - For about the last 25 minutes, Ong has been on the phone with a number of employees at the reservations office, and has been providing them with information about the trouble on her plane. [9/11 Commission, 8/26/2004, pp. 8 pdf file] But now she stops responding to their communications. Nydia Gonzalez, one of the reservations office employees, continues questioning Ong. She says: “What’s going on Betty? Betty, talk to me. Betty, are you there? Betty?” Receiving no response, she asks her colleague Winston Sadler, who is also participating in the call, “Do you think we lost her?” On another phone line, Gonzalez immediately notifies a manager at the American Airlines System Operations Control center in Texas that contact with Ong has been lost (see 8:44 a.m. September 11, 2001). [American Airlines, 9/11/2001, pp. 20-22; 9/11 Commission, 8/26/2004, pp. 14 pdf file]
Ong Asked Airline Employees to 'Pray for Us' - Toward the end of the call, Ong said repeatedly to the reservations office employees: “Pray for us. Pray for us.” [ABC News, 7/18/2002] Gonzalez will say in an interview later today that Ong’s final words, before the call ends, were, “Oh my God, the flight, it’s going down, it’s going down.” [Federal Bureau of Investigation, 9/11/2001, pp. 1-8] But in a subsequent interview, she will say that before the call ends, Ong “started to cry” and then her final words were, “Oh God, oh God, what is going on?” [Federal Bureau of Investigation, 9/12/2001, pp. 69-71] The reservations office employees have lost communication with Ong by 8:44 a.m., according to the 9/11 Commission Report. [9/11 Commission, 7/24/2004, pp. 6] But according to a summary of phone calls from the hijacked flights presented at the 2006 trial of Zacarias Moussaoui, the call from Ong began at 8:18 a.m. and 47 seconds, and lasts exactly 27 minutes, meaning it ends at 8:45 a.m. and 47 seconds. [US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006] Flight 11 will crash into the World Trade Center less than a minute after that, at 8:46 a.m. (see 8:46 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 7]

Entity Tags: Betty Ong, Winston Sadler, Nydia Gonzalez, American Airlines

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Craig Marquis, the manager on duty at the American Airlines System Operations Control center in Fort Worth, Texas, is told that the American Airlines Southeastern Reservations Office in North Carolina has lost contact with Betty Ong, a flight attendant on the hijacked Flight 11, and he then says he wants the reservations office employees to keep quiet about the hijacking. [American Airlines, 9/11/2001, pp. 20-22; 9/11 Commission, 8/26/2004, pp. 14 pdf file] Marquis is on the phone with Nydia Gonzalez, a supervisor at the reservations office who, for over 20 minutes, has been relaying to him information she was receiving in a simultaneous phone call with Ong (see (8:21 a.m.) September 11, 2001). [9/11 Commission, 11/19/2003 pdf file; 9/11 Commission, 8/26/2004, pp. 8-9 pdf file] Ong, however, has stopped responding to communications (see (8:43 a.m.) September 11, 2001). Gonzalez promptly informs Marquis of this. She tells him, “I think we might have lost her.” Marquis says, “Okay,” and then tells Gonzalez, “If in fact she calls back, you call me back.” Gonzalez agrees to do this.
Marquis Tells Gonzalez to Keep Quiet about Hijacking - Marquis then tells Gonzalez that he wants her and her colleagues to keep quiet about the hijacking of Flight 11. He says, “I don’t want this spread all over.” Gonzalez has already instructed the other reservations office employees who were on the phone with Ong to keep quiet about the hijacking (see 8:31 a.m. September 11, 2001), and agrees to Marquis’s request. She answers: “Right. I’ve already made that indication to our people here.” Marquis says, “Try to make sure that it’s followed through on, okay?” Gonzalez replies, “Okay.” Just before the call between Marquis and Gonzalez ends, Marquis tells Gonzalez, “I’ll be back in touch with you.” Gonzalez then says, “I’m gonna stay on the line with my agent just in case we get the line [with Ong] back, and I’ll call you back.” [American Airlines, 9/11/2001, pp. 20-22]

Entity Tags: Nydia Gonzalez, American Airlines, Craig Marquis, Betty Ong

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

The hole caused by the Flight 11 crash.The hole caused by the Flight 11 crash. [Source: Reuters]Flight 11 slams into the WTC North Tower (Building 1). Hijackers Mohamed Atta Waleed Alshehri, Wail Alshehri, Abdulaziz Alomari, and Satam Al Suqami presumably are killed instantly, and many more in the tower will die over the next few hours. Seismic records pinpoint the crash at 26 seconds after 8:46 a.m. [CNN, 9/12/2001; New York Times, 9/12/2001; North American Aerospace Defense Command, 9/18/2001; USA Today, 12/20/2001; Federal Emergency Management Agency, 5/1/2002, pp. 1-10; New York Times, 5/26/2002; USA Today, 8/13/2002; Associated Press, 8/21/2002; Newsday, 9/10/2002] The NIST report states the crash time to be 8:46:30. [National Institute of Standards and Technology, 9/2005, pp. 19] The 9/11 Commission Report states the crash time to be 8:46:40. [9/11 Commission, 7/24/2004, pp. 7] Investigators believe the plane still has about 10,000 gallons of fuel (see 8:57 a.m. September 11, 2001). [New York Times, 5/26/2002] The plane strikes the 93rd through 99th floors in the 110-story building. No one above the crash line survives; approximately 1,360 people die. Below the crash line, approximately 72 die and more than 4,000 survive. Both towers are slightly less than half full at the time of the attack, with between 5,000 to 7,000 people in each tower. This number is lower than expected. Many office workers have not yet shown up to work, and tourists to the observation deck opening at 9:30 A.M. have yet to arrive. [USA Today, 12/20/2001; National Institute of Standards and Technology, 9/2005, pp. 20-22] The impact severs some columns on the north side of the North Tower. Each tower is designed as a “tube-in-tube” structure and the steel columns which support its weight are arranged around the perimeter and in the core. The plane, which weighs 283,600 lb and is traveling at an estimated speed of around 430 mph (see October 2002-October 2005), severs 35 of the building’s 236 perimeter columns and damages another two. The damage to the South Tower’s perimeter will be similar (see 9:03 a.m. September 11, 2001). [National Institute of Standards and Technology, 9/2005, pp. 5-9, 20, 22] The perimeter columns bear about half of the tower’s weight, so this damage reduces its ability to bear gravity loads by about 7.5 percent. [National Institute of Standards and Technology, 9/2005, pp. 6] The actual damage to the 47 core columns is not known, as there are no photographs or videos of it, but there will be much speculation about this after 9/11. It will be suggested that some parts of the aircraft may have damaged the core even after crashing through the exterior wall. According to the National Institute of Standards and Technology (NIST): “Moving at 500 mph, an engine broke any exterior column it hit. If the engine missed the floor slab, the majority of the engine core remained intact and had enough residual momentum to sever a core column upon direct impact.” [National Institute of Standards and Technology, 9/2005, pp. 107] According to NIST’s base case computer model, three of the core columns are severed and another ten suffer some damage. [National Institute of Standards & Technology, 9/2005, pp. 189 pdf file] If this is accurate, it means that the impact damage to the core reduces the Tower’s strength by another approximately 7.5 percent, meaning that the building loses about 15 percent of its strength in total. This damage will be cited after 9/11 by NIST and others researchers as an event contributing to the building’s collapse (see October 23, 2002 and October 19, 2004). In addition, some of the fireproofing on the steel columns and trusses may be dislodged. The original fireproofing on the fire floors was mostly Blazeshield DC/F, but some of the fireproofing on the flooring has recently been upgraded to Blazeshield II, which is about 20 percent denser and 20 percent more adhesive. [National Institute of Standards & Technology, 9/2005, pp. xxxvi, 83 pdf file] Photographs and videos of the towers will not show the state of fireproofing inside the buildings, but NIST will estimate the damage to it using a computer model. Its severe case model (see (October 2002-October 2005)) will predict that 43 of the 47 core columns are stripped of their fireproofing on one or more floors and that fireproofing is stripped from trusses covering 60,000 ft2 of floor area, the equivalent of about one and a half floors. NIST will say that the loss of fireproofing is a major cause of the collapse (see April 5, 2005), but only performs 15 tests on fireproofing samples (see October 26, 2005). [National Institute of Standards and Technology, 9/2005, pp. 23] According to NIST, more fireproofing is stripped from the South Tower (see 9:03 a.m. September 11, 2001).

Entity Tags: Mohamed Atta, National Institute of Standards and Technology, Satam Al Suqami, Waleed Alshehri, Abdulaziz Alomari, World Trade Center, Wail Alshehri

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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