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Context of '(8:43 a.m.) September 11, 2001: Airline Reservations Office Loses Contact with Flight 11 Attendant Betty Ong'

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Jackie Chan.Jackie Chan. [Source: Reuters]A scene for a Hollywood movie about a terrorist plot to blow up the World Trade Center was originally scheduled to be filmed at the top of one of the Twin Towers at this time, but the filming has been canceled because the script for the scene is late to arrive. [ABC News, 9/19/2001; Empire, 9/19/2001; Orlando Sentinel, 9/27/2002] The action-comedy movie, titled Nosebleed, which was written in 1999 (see February 1999-September 11, 2001), is set to feature the well-known martial artist and actor Jackie Chan as a window washer at the WTC who uncovers a terrorist plot to bomb the Twin Towers. [Variety, 2/7/1999; Entertainment Weekly, 9/24/2001]
Actor 'Would Probably Have Died' if Filming Took Place - Chan will later tell the Hong Kong newspaper Oriental Daily News, “Filming was scheduled to have taken place at 7:00 a.m. [on September 11] and… I had to be at the top of one of the towers for one of the scenes.” [ABC News, 9/19/2001; Empire, 9/19/2001] The scene, Chan will say, was going to be filmed at the “Top of the World restaurant.” [Orlando Sentinel, 9/27/2002] Presumably he is referring to Windows on the World, the restaurant at the top of the North Tower. Everyone who is in Windows on the World when Flight 11 hits the North Tower at 8:46 a.m. (see 8:46 a.m. September 11, 2001) will subsequently die. [NPR, 9/11/2003] Chan will comment, “I would probably have died if the shooting had gone ahead as planned.” Today’s filming at the WTC has been canceled, reportedly because the script for the scene that would have been filmed is late. [ABC News, 9/19/2001; Empire, 9/19/2001] “The action was good, but, somehow, the script not ready,” Chan will say.
Actor Is in Canada for Another Film - Instead of doing the scene for Nosebleed, Chan is in Toronto, Canada, where filming began the previous day for another movie he is starring in. That movie, The Tuxedo, is an action-comedy that Steven Spielberg is involved in producing. Chan will say of The Tuxedo, “I only did this movie because Steven Spielberg asked me himself.” [Reuters, 6/17/2001; Canoe, 7/11/2001; Orlando Sentinel, 9/27/2002] He will recall learning of the attacks in New York during filming, saying: “After the first shot, I turned around and everyone was looking at one monitor, and nobody had responded to me. They said, ‘Jackie, a plane crashed into the World Trade Center.’ Then we [saw] the second plane crash. We knew it was a terrorist attack and everyone started crying.” Chan will add, “The whole day I was like a walking dead man.” [Columbia Chronicle, 9/23/2002]
Actor Learned 'Secrets' of the WTC in Preparation for Film - Chan has done a lot of groundwork for Nosebleed. “We had visited the [WTC] before September 11,” he will recall. “The producer. My manager. We had dinner upstairs. We were getting all kinds of information. I was going to play a window washer, so they were telling me things like how many windows the building had.” Chan has therefore learned “the ‘secrets’ of the towers—how air pressure was regulated with doors that might be useful as gags in one of his trademark fights—which sides of the buildings one could work on to avoid the wind,” according to the Orlando Sentinel. [Orlando Sentinel, 9/27/2002; Rocky Mountain News, 9/28/2002] Production of Nosebleed will be canceled as a result of the 9/11 attacks. [PBS, 10/24/2001; Village Voice, 12/4/2001]

Entity Tags: Jackie Chan

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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

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

A Sikorsky S-76A helicopter flying over New York.
A Sikorsky S-76A helicopter flying over New York. [Source: Sikorsky]A helicopter is tracked on radar apparently crashing into the World Trade Center, according to a report later given by a New York air traffic controller over an FAA teleconference.
Helicopter Is 'the Only Target that We Saw ... to Fly into the Trade Center' - At around 10:15 a.m., Tom White, an operations manager at the FAA’s New York Terminal Radar Approach Control (TRACON), will tell those on the FAA teleconference that his facility tracked a Sikorsky helicopter that had taken off from the airport in Poughkeepsie, New York, and this helicopter appeared to fly into the WTC at 8:27 a.m. (see (10:15 a.m.) September 11, 2001). White will add that, after replaying radar information, it is concluded that the helicopter is “the only target that we saw in the vicinity of the Trade Center at 12:27 [Zulu time, or 8:27 a.m. Eastern time] to fly into the Trade Center.” [Federal Aviation Administration, 9/11/2001; 9/11 Commission, 5/21/2004] (However, the first crash at the WTC will not occur until 8:46 a.m. (see 8:46 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 7] ) The “Poughkeepsie airport” the helicopter took off from is presumably Dutchess County Airport. Sikorsky reportedly bases a fleet of its S-76 helicopters at Dutchess County Airport, “dispatching them to the New York metro areas as needed.” [Site Selection, 5/2000; Aviation International News, 8/1/2003] Poughkeepsie is about 70 miles north of New York City. [Pittsburgh Post-Gazette, 2/3/2008]
Helicopter 'Consistent with the Speed' of What Hits WTC - White will say the helicopter’s tail number is N7601S, that it departed the Poughkeepsie airport at 8:03 a.m., and that it then headed south at a speed of around 160 knots, or 184 miles per hour. He will add: “The tower [presumably the air traffic control tower at the Poughkeepsie airport] says the only thing they had southbound at that time was a Sikorsky helicopter, which is consistent with the speed that we followed it down.… They’re saying they replayed the radar and it’s consistent with the speed of what went into the [WTC] tower.” [Federal Aviation Administration, 9/11/2001] (However, an analysis by the US government will later estimate that Flight 11 hits the WTC at 494 miles per hour, or 429 knots, which is significantly faster than the helicopter was flying. [New York Times, 2/23/2002] )
Mistaken Information Later Corrected - It will apparently take until early afternoon for the suspicions about the Sikorsky helicopter hitting the WTC to be dismissed. An FAA chronology of this day’s events will state that at 1:00 p.m., the “Sikorsky helicopter” is “now believed not to have hit the WTC.” [Federal Aviation Administration, 1/2/2002 pdf file] Another FAA chronology will state that at 1:04 p.m., it is reported that the Sikorsky helicopter “landed 20 minutes early, normal GE run at 12:28Z [i.e. 8:28 a.m. Eastern time] to WTC.” (It is unclear what is meant by “normal GE run.”) [Federal Aviation Administration, 9/11/2001]

Entity Tags: World Trade Center, Tom White (FAA), New York Terminal Radar Approach Control

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

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

An air traffic controller at the FAA’s Boston Center suggests that Flight 11 is going to crash into the World Trade Center. [The Learning Channel, 8/20/2006] Flight 11 is heading southbound toward New York, descending at about 3,200 feet per minute. [National Transportation Safety Board, 2/19/2002 pdf file] John Hartling, a controller at the Boston Center who has been monitoring it (see (8:34 a.m.) September 11, 2001), will later recall, “One of my fellow controllers on the other side of the room, I heard him say, ‘That airplane’s gonna hit the World Trade Center.’” [The Learning Channel, 8/20/2006] Flight 11 will crash into the WTC at 8:46 a.m. (see 8:46 a.m. September 11, 2001). [National Transportation Safety Board, 2/19/2002 pdf file]

Entity Tags: John Hartling, Boston Air Route Traffic Control Center

Timeline Tags: Complete 911 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

George Tabeek, a security manager with the Port Authority of New York and New Jersey, decides to have an announcement made in the South Tower of the World Trade Center, instructing workers to stay in, or return to, their offices, instead of evacuating. [New Jersey Star-Ledger, 9/6/2011; ABC News, 9/10/2011] After Flight 11 hits the North Tower at 8:46 a.m. (see 8:46 a.m. September 11, 2001), many people in the South Tower, who are unclear about what has happened, decide to leave their building. [9/11 Commission, 7/24/2004, pp. 287]
Security Manager Passes on Decision to Fire Command Desk - However, around the same time, Tabeek, the Port Authority’s security manager for the WTC, decides not to evacuate the South Tower and to issue instructions advising workers to go back to their offices. [ABC News, 9/10/2011] Tabeek will later recall that he contacts his “fire safety command” and tells the person he talks with “to evacuate the North Tower, but keep people inside the South Tower.” [New Jersey Star-Ledger, 9/6/2011] Presumably Tabeek means that he contacts the fire command desk in the lobby of the South Tower, which is currently manned by Philip Hayes, a deputy fire safety director. A button at the desk allows fire safety directors to deliver announcements over the tower’s public address system. [Dwyer and Flynn, 2005, pp. 26]
Security Manager's Instruction Leads to Announcement - Shortly after Tabeek gives his instruction to the fire command desk, an announcement, later believed to have been made by Hayes, will go out over the public address system, telling workers in the South Tower that their building is safe and advising them to stay in, or return to, their offices (see (8:50 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 287-288; Dwyer and Flynn, 2005, pp. 72] That announcement “may have led to the deaths of hundreds of people,” USA Today will suggest. [USA Today, 9/2/2002] Some security officials in the South Tower will instruct workers, in person, to return upstairs, rather than evacuate (see (8:47 a.m.-9:02 a.m.) September 11, 2001). It is unclear if those officials are, like Hayes, acting on instructions issued by Tabeek. [Observer, 9/16/2001; 9/11 Commission, 7/24/2004, pp. 289]
Instruction Is Inconsistent with Protocol - Tabeek’s instruction reportedly goes against protocol. The 9/11 Commission Report will state: “When a notable event occurred [at the WTC], it was standard procedure for the on-duty deputy fire safety director to make an ‘advisory’ announcement to tenants who were affected by or might be aware of the incident, in order to acknowledge the incident and to direct tenants to stand by for further instructions. The purpose of advisory announcements, as opposed to ‘emergency’ announcements (such as to evacuate), was to reduce panic.” Therefore, according to the 9/11 Commission Report, “A statement from the deputy fire safety director informing tenants that the incident had occurred in the other building” would be “consistent with protocol.” However, “the expanded advice” that Tabeek asks to be given—for workers to stay in, or return to, their offices—“did not correspond to any existing written protocol.” [9/11 Commission, 7/24/2004, pp. 288, 544]
Security Manager Thinks Evacuation Would Put Workers in Danger - Tabeek will explain why he decided to instruct workers to stay in the South Tower, telling ABC News he was “worried about the debris raining down from the crippled North Tower onto the plaza below,” and he was therefore “afraid that if he evacuated people who he thought were safe in the South Tower… they’d be in grave danger from the falling debris.” He will tell the New Jersey Star-Ledger, “If these people’s lives in [the South Tower] are not in danger, if I put them outside, their life is in danger.” Tabeek will also explain his decision by saying, “We never took into consideration a dual attack.” In response to criticism of his decision, he will say, “I can’t go back on the orders I gave, because at the time it was the right thing to do.” [New Jersey Star-Ledger, 9/6/2011; ABC News, 9/10/2011]

Entity Tags: George Tabeek, Philip T. Hayes

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Ben Sliney, the national operations manager at the FAA’s Herndon Command Center, learns that a plane has hit the World Trade Center, but it does not occur to him that this might have been the hijacked Flight 11 that he has been tracking. As national operations manager, Sliney is in charge of supervising all activities on the Command Center’s operations floor and overseeing the entire air traffic control system for the United States. He is currently on the operations floor, trying to gather and disseminate whatever information he can about Flight 11. [Spencer, 2008, pp. 2 and 45-46] At 8:48 a.m., a manager at the FAA’s New York Center provides a report on Flight 11 over a Command Center teleconference, saying: “We’re watching the airplane. I also had conversation with American Airlines, and they’ve told us that they believe that one of their stewardesses was stabbed and that there are people in the cockpit that have control of the aircraft, and that’s all the information they have right now.” [9/11 Commission, 7/24/2004, pp. 21] Although Flight 11 crashed two minutes earlier (see 8:46 a.m. September 11, 2001), this is all Sliney is currently hearing about the aircraft. The Command Center’s military liaison then approaches him. The liaison is a colonel who is responsible for handling military airspace reservations, but is not part of the NORAD chain of command. He tells Sliney to put CNN up on one of the center’s screens, because “They are reporting that a small plane has hit the World Trade Center.” Upon following this suggestion, Sliney and his colleagues see the television footage of the burning North Tower. Sliney is baffled, commenting aloud: “That’s a lot of smoke for a small plane. I’ve worked New York airspace. Why would you be right over the World Trade Center on a clear, bright day?” However, according to author Lynn Spencer, “The notion that it is actually American 11 that has hit the tower doesn’t cross his mind; the idea that the hijacking they’ve been tracking might have flown into that building, especially on such a clear day, is simply unfathomable.” [Spencer, 2008, pp. 46]

Entity Tags: New York Air Route Traffic Control Center, Ben Sliney, Lynn Spencer, Federal Aviation Administration

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Alan DeVona.Alan DeVona. [Source: Atlas Shrugs]An officer with the Port Authority Police Department (PAPD) calls for the evacuation of the upper floors of the North Tower of the World Trade Center over a PAPD radio channel. Transcripts of PAPD radio transmissions will show that at 8:49 a.m., three minutes after Flight 11 crashed into the North Tower (see 8:46 a.m. September 11, 2001), the PAPD officer talks to the PAPD desk, which is in Building 5 of the WTC, just northeast of the North Tower. He says: “Start doing the evac, the upper levels. Have the units put on the Scott air packs.” The officer at the PAPD desk then radios all PAPD units and tells them to “bring Scott air packs [to] One World Trade,” i.e. the North Tower. [Port Authority of New York and New Jersey, 9/11/2001, pp. 2 pdf file; Port Authority of New York and New Jersey, 11/12/2001, pp. 16 pdf file; National Institute of Standards and Technology, 9/2005, pp. 195]
Patrol Sergeant Recalls Requesting Evacuation - It is unclear which PAPD officer requests the evacuation at this time. According to some accounts, Alan DeVona, the PAPD patrol sergeant at the WTC, makes the request. [Port Authority of New York and New Jersey, 11/12/2001, pp. 16 pdf file; Dwyer and Flynn, 2005, pp. 78] DeVona will later recall that he had just walked out from the PAPD desk in WTC 5 when he heard the explosion as Flight 11 hit the North Tower. Along with his colleague, Anthony Basic, he radioed the PAPD desk and reported that the top floors of the North Tower were on fire, due to a “possible aircraft collision.” He headed into the North Tower to coordinate with emergency agencies as they arrived there. DeVona will recall that he then “radios to have all WTC police units get Scott air packs and begin evacuation of [the North Tower].” He will subsequently be “approached by numerous PAPD units as they entered the lobby” of the North Tower, and he “dispatches them through the concourse to evacuate the complex.” [Devona, 3/28/2002, pp. 24 pdf file]
Police Commander Recalls Requesting Evacuation - However, Captain Anthony Whitaker, the PAPD commanding officer at the WTC, will also say that he calls for the evacuation of the WTC around this time. Whitaker was on duty in the shopping mall beneath the Twin Towers when Flight 11 hit the North Tower. [Dwyer and Flynn, 2005, pp. 78] He heard a “strange roar” and saw a “gigantic fireball” coming out of the lobby of the North Tower. He then contacts the PAPD desk in WTC 5. Whitaker will recall, “I had no idea what had just happened, but I knew it was bad.” Therefore, he will say, “I ordered the cop at the desk to begin a full-scale evacuation of the entire complex.” This will mean the evacuation of “both towers and the adjoining buildings.” Whitaker contacts one of his sergeants and then, he will recall, “we started placing Port Authority cops in strategic locations in the shopping mall to direct the evacuation.” Whitaker will say that after 9/11, he is repeatedly asked, “Why did you give that order to evacuate at that particular time?” following the first crash, but before the second plane hit the WTC. His explanation will be: “It just occurred to me that whatever was going on—and I still didn’t know what that was—was beyond my ability as a commanding officer of that facility to do anything about it. So it seemed to me that the only prudent thing to do was start a full-scale evacuation and get everybody out of there.” [Fink and Mathias, 2002, pp. 23-24; Murphy, 2002, pp. 179-181]
Evacuation Orders Cannot Be Heard by Fire Safety Directors - At 9:00 a.m., Whitaker will call for an evacuation of the entire WTC complex (see 8:59 a.m.-9:02 a.m. September 11, 2001). However, both that instruction and the current one are given over PAPD radio channel W, which cannot be heard by the deputy fire safety directors in the Twin Towers, who are able to make announcements to the buildings’ occupants over the public address systems. [WTC News, 8/1995 pdf file; Port Authority of New York and New Jersey, 11/12/2001, pp. 19 pdf file; 9/11 Commission, 7/24/2004, pp. 293; National Institute of Standards and Technology, 9/2005, pp. 195, 201] An announcement advising workers to evacuate will only go out over the public address system in the South Tower at 9:02 a.m. (see 9:02 a.m. September 11, 2001). And attempts to order workers to evacuate the North Tower are unsuccessful because that building’s public address system was damaged by the plane crash (see (Between 8:47 a.m. and 8:55 a.m.) September 11, 2001). [New York Times, 5/18/2004]
PAPD Investigates All Reports of Fires at WTC - The WTC is a Port Authority property, which means it is patrolled by the PAPD—the Port Authority’s independent police agency. Members of the PAPD respond to “thefts, injuries, fires, all species of crisis large and small, almost always more quickly than the city emergency responders could get there,” according to New York Times reporters Jim Dwyer and Kevin Flynn. “By plan,” Dwyer and Flynn will write, “the PAPD checked out every report of fire” and “its officers were trained in at least rudimentary firefighting.” [Dwyer and Flynn, 2005, pp. 78]

Entity Tags: Anthony Basic, Anthony Whitaker, Alan DeVona, Port Authority Police Department

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

An announcement goes out over the public address system in the South Tower of the World Trade Center, telling workers that an incident has occurred in the other WTC tower and their building is safe, and advising them to stay in—or return to—their offices, rather than evacuate. [USA Today, 9/2/2002; 9/11 Commission, 7/24/2004, pp. 287-288] After Flight 11 hit the North Tower at 8:46 a.m. (see 8:46 a.m. September 11, 2001), many people in the South Tower were unaware of what had happened. “Some believed an incident had occurred in their building; others were aware that a major explosion had occurred on the upper floors of the North Tower,” the 9/11 Commission Report will state. As a result, many workers decided to leave the South Tower. [9/11 Commission, 7/24/2004, pp. 287] As they do so, an announcement is made over the public address system.
Announcement Says South Tower Is Secure - Brian Clark, an executive with Euro Brokers who also serves as a fire warden and is on the 84th floor of the South Tower, will later describe this announcement. “First, the strobe lights flashed, as they did during their normal fire drills,” he will say. “The alarm system gave a little bit of a whoop, whoop… to alert you to an announcement about to be made. Then the very familiar voice, the one we heard all the time, came over the system.” Clark will recall that the voice says: “Your attention, please, ladies and gentlemen. Building 2 [i.e. the South Tower] is secure. There is no need to evacuate Building 2. If you are in the midst of evacuation, you may use the re-entry doors and the elevators to return to your office. Repeat, Building 2 is secure.” [PBS, 4/30/2002; Dwyer and Flynn, 2005, pp. 72] The announcement is made two or possibly three times, according to USA Today. [USA Today, 9/2/2002] Florence Engoran, a credit analyst working in the South Tower, will recall it being made “[o]ver and over and over again.” [DiMarco, 2007, pp. 50]
Announcement May Lead to Hundreds of Deaths - Many people in the South Tower remain on their floors after hearing the announcement, while others who were leaving the building turn around and head back upstairs. [9/11 Commission, 7/24/2004, pp. 289] USA Today will suggest that the announcement therefore “may have led to the deaths of hundreds of people.” [USA Today, 9/2/2002] According to the National Institute of Standards and Technology, of those who die in the South Tower, only 11 are below where the plane hits the tower at 9:03 a.m. (see 9:03 a.m. September 11, 2001), and 619 are in or above the point of impact. [National Institute of Standards and Technology, 9/2005, pp. 44]
Announcement Goes against Protocol - The announcement is later believed to have been made by Philip Hayes, a deputy fire safety director at the WTC, who is manning the fire command desk in the lobby of the South Tower. Fire safety directors are trained to read scripted announcements from a loose-leaf binder. But, according to the 9/11 Commission Report, the advice given in the announcement, for people to stay in, or return to, their offices, “did not correspond to any existing written protocol.”
Security Manager Decided to Instruct Workers Not to Evacuate - The 9/11 Commission Report will also state, “We do not know the reason for the announcement, as both [Hayes] and the director of fire safety for the WTC complex perished in the South Tower’s collapse.” [USA Today, 9/2/2002; 9/11 Commission, 7/24/2004, pp. 288; Dwyer and Flynn, 2005, pp. 26, 72] However, George Tabeek, a security manager with the Port Authority of New York and New Jersey, will admit having made the decision to instruct South Tower workers to return to their offices (see Shortly After 8:46 a.m. September 11, 2001). [ABC News, 9/10/2011] Some security officials in the South Tower instruct workers, in person, to return upstairs, rather than evacuate (see (8:47 a.m.-9:02 a.m.) September 11, 2001). But finally, about a minute before Flight 175 hits the South Tower, an instruction will be broadcast over the public address system informing workers that they can begin an evacuation if conditions warrant it (see 9:02 a.m. September 11, 2001). [Observer, 9/16/2001; 9/11 Commission, 7/24/2004, pp. 289]

Entity Tags: Philip T. Hayes, Brian Clark, Florence Engoran

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

A typical F-15.A typical F-15. [Source: US Air Force]Radar data will show that the two F-15s scrambled from Otis Air National Guard Base in Cape Cod, Massachusetts, are airborne by this time. [Washington Post, 9/15/2001; North American Aerospace Defense Command, 9/18/2001; 9/11 Commission, 7/24/2004, pp. 20] It is now eight minutes since the mission crew commander at NORAD’s Northeast Air Defense Sector (NEADS) ordered that the jets be launched (see 8:45 a.m. September 11, 2001). [Vanity Fair, 8/1/2006] It is 40 minutes since air traffic controllers had their last communication with Flight 11 (see 8:13 a.m. September 11, 2001), and 28 minutes since they became certain that the aircraft was hijacked (see (8:25 a.m.) September 11, 2001). Flight 11 crashed into the World Trade Center seven minutes ago (see 8:46 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 7, 19 and 459]
Commander Wants Fighters Sent to New York - In Rome, New York, NEADS has just received news of the plane hitting the WTC (see 8:51 a.m. September 11, 2001). Major Kevin Nasypany, the facility’s mission crew commander, is asked what to do with the Otis fighters. He responds: “Send ‘em to New York City still. Continue! Go! This is what I got. Possible news that a 737 just hit the World Trade Center. This is a real-world.… Continue taking the fighters down to the New York City area, JFK [International Airport] area, if you can. Make sure that the FAA clears it—your route all the way through.… Let’s press with this.” [Vanity Fair, 8/1/2006] Yet there will be conflicting reports of the fighters’ destination (see (8:53 a.m.-9:05 a.m.) September 11, 2001), with some accounts saying they are directed toward military-controlled airspace off the Long Island coast. [Filson, 2003, pp. 56-59; 9/11 Commission, 6/17/2004]

Entity Tags: Northeast Air Defense Sector, Robert Marr, Kevin Nasypany, Otis Air National Guard Base

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

An air traffic controller at the FAA’s Boston Center directs the two fighter jets that took off from Otis Air National Guard Base in response to the hijacked Flight 11 toward a new heading, based on instructions he has just received from NORAD’s Northeast Air Defense Sector (NEADS).
NEADS Gave New Heading for Fighters - The Boston Center controller, who is working at the Cape Sector radar position, has just been contacted by someone from NEADS. The caller from NEADS, referring to the two fighters from Otis Air Base, said, “The heading that we gave him on, I guess, is a bad heading.” [Federal Aviation Administration, 9/11/2001; 9/11 Commission, 2004] (The original flight strip for the fighters gave a destination of New York’s JFK International Airport. [9/11 Commission, 9/22/2003 pdf file] ) The caller said the fighters’ target was “now south of JFK,” and added, “Can you direct the Panta flight [i.e. the two Otis fighters] towards that now?” The controller replied: “If I’m talking to him, I don’t know where that target [is]. I don’t even see the target at all.” [Federal Aviation Administration, 9/11/2001] The “target,” Flight 11, crashed into the World Trade Center at 8:46 a.m. (see 8:46 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 7] However, the caller explained that NEADS had just talked to Colin Scoggins, the military liaison at the Boston Center, and Scoggins said the target was “south of JFK now.” The caller therefore reiterated, “We want to get [the Otis fighters] headed in that direction.” The controller confirmed, “I’ll do that.”
Controller Passes on New Heading to Pilot - Seconds later, Lieutenant Colonel Timothy Duffy, one of the pilots of the two fighters out of Otis Air Base, checks in with the Boston Center controller. Duffy says, “Boston Center, Panta 45 with you out of 13-5 for 290.” [Federal Aviation Administration, 9/11/2001; 9/11 Commission, 2004] (“Panta 45” is Duffy’s call sign. [Spencer, 2008, pp. 113] ) The controller tells Duffy, “Panta 45, roger, fly heading of 260.” Duffy confirms the new heading. The controller then instructs, “Maintain block 290.” Duffy confirms, “Six zero on the heading, climbing to flight level [of] 290.” The controller will then tell Duffy that Flight 11 has crashed into the WTC (see 8:55 a.m. September 11, 2001). [Federal Aviation Administration, 9/11/2001]

Entity Tags: Timothy Duffy, Boston Air Route Traffic Control Center, Northeast Air Defense Sector, Colin Scoggins

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

One of the two fighter pilots who took off in response to the hijacked Flight 11 is told by air traffic control that Flight 11 has crashed into the World Trade Center, and yet both pilots will later claim they are unaware of this crash until after 9:03 a.m., when Flight 175 hits the WTC. [Federal Aviation Administration, 9/11/2001; Cape Cod Times, 8/21/2002; ABC News, 9/11/2002; Filson, 10/2/2002; Filson, 10/22/2002; 9/11 Commission, 2004] Lieutenant Colonel Timothy Duffy and Major Daniel Nash took off in their F-15s from Otis Air National Guard Base in Cape Cod, Massachusetts, at 8:46 a.m. (see 8:46 a.m. September 11, 2001), but were unaware that at the same time, Flight 11 was crashing into the WTC (see 8:46 a.m. September 11, 2001). [Filson, 2003, pp. 57; 9/11 Commission, 7/24/2004, pp. 20]
Controller Tells Pilot that Flight 11 Crashed into WTC - Duffy has just checked in with the air traffic controller at the FAA’s Boston Center who is working at the Cape Sector radar position, and the controller has given him a new heading to fly toward (see 8:54 a.m.-8:55 a.m. September 11, 2001). The controller now asks Duffy, “I understand you’re going out to look for American 11, is that correct?” Duffy replies, “Affirmative.” The controller then tells Duffy that Flight 11 has crashed. He says, “Okay, I just got information that the aircraft has been, uh, crashed into the World Trade Center, so I’m not quite sure what your intentions are, if you’re still going to head that way or you may want to talk to your operations.” Duffy responds, “Okay, we’re going to go over and talk to Huntress right now.” (“Huntress” is the call sign for NORAD’s Northeast Air Defense Sector, NEADS.) [Federal Aviation Administration, 9/11/2001; 9/11 Commission, 2004] Although Duffy contacts NEADS (see (8:56 a.m.-8:57 a.m.) September 11, 2001), it is unclear whether he talks about the crash, as he indicates he is going to, since, according to the 9/11 Commission Report, “there are no NEADS recordings available of the NEADS senior weapons director and weapons director technician position responsible for controlling the Otis [Air National Guard Base] scramble” (see (8:30 a.m.-3:00 p.m.) September 11, 2001). [9/11 Commission, 1/7/2004 pdf file; 9/11 Commission, 7/24/2004, pp. 459] It is also unclear whether Duffy passes on the information about Flight 11 hitting the WTC to Nash. But in later interviews, both pilots will claim they were unaware of Flight 11 hitting the WTC until they were informed that a second aircraft had hit the WTC, shortly after that second crash occurred (see (9:03 a.m.) September 11, 2001 and 9:06 a.m.-9:07 a.m. September 11, 2001). [9/11 Commission, 2004; Spencer, 2008, pp. 84]
Pilots Deny Learning of First Crash - The Cape Cod Times will report that Nash “doesn’t even recall hearing that the first plane hit.” [Cape Cod Times, 8/21/2002] Nash will tell author Leslie Filson that when he and Duffy are informed of the second plane hitting the WTC, they are “still under [the] impression [that] American 11 was still airborne” and are “shocked, because we didn’t know the first one had even hit.” [Filson, 10/2/2002] And Nash will tell the 9/11 Commission that he “does not remember at which point during the morning of 9/11 he heard of the first crash at the WTC.” He will say he does “remember that the FAA controller he communicated with during flight told him of the second crash,” but add that “this was strange to hear at the time, since he had not been told of the first.” [9/11 Commission, 10/14/2003 pdf file] Duffy will tell ABC News that when he is informed of the second crash, “I thought we were still chasing American 11.” [ABC News, 9/11/2002] He will tell Filson that when he learns of this second crash, “I didn’t know [the] first one hit” the WTC. [Filson, 10/22/2002] And he will tell the 9/11 Commission that when he “received word that a second aircraft had hit the WTC,” he “still thought they were responding to a hijacked American [Airlines] airliner.” [9/11 Commission, 1/7/2004 pdf file]

Entity Tags: Timothy Duffy, Daniel Nash, Boston Air Route Traffic Control Center

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Lieutenant Colonel Timothy Duffy, one of the two fighter pilots who took off in response to the hijacked Flight 11, contacts NORAD’s Northeast Air Defense Sector (NEADS) to request information on his target, but apparently neither Duffy nor the person he speaks with at NEADS mention that Flight 11 has already hit the World Trade Center during the call, even though both men should already be aware of the crash. [Federal Aviation Administration, 9/11/2001; Filson, 10/22/2002; Filson, 2003, pp. 60; 9/11 Commission, 1/7/2004 pdf file] Duffy and another pilot, Major Daniel Nash, took off from Otis Air National Guard Base at 8:46 a.m. (see 8:46 a.m. September 11, 2001), but they were unaware that at the same time, Flight 11 was crashing into the WTC (see 8:46 a.m. September 11, 2001). [Filson, 2003, pp. 57; 9/11 Commission, 7/24/2004, pp. 20] Duffy has just spoken to an air traffic controller at the FAA’s Boston Center (see 8:54 a.m.-8:55 a.m. September 11, 2001) and ended the call saying he would talk to NEADS “right now.” [Federal Aviation Administration, 9/11/2001] Duffy will later recall that he contacts NEADS at about 8:56 a.m. or 8:57 a.m. [9/11 Commission, 1/7/2004 pdf file]
Duffy Told His Target Is over JFK Airport - Duffy presumably talks with Steve Hedrick at NEADS, since Hedrick is responsible for controlling the two Otis fighters. [9/11 Commission, 10/27/2003 pdf file] As soon as he has checked in with NEADS, Duffy will recall, “I authenticate to make sure I’ve got the right person.” He then asks for “bogey dope,” meaning information on his target—Flight 11—“to try to find out where the contact is.” [Filson, 10/22/2002; Filson, 2003, pp. 60] Duffy is told, incorrectly, that his target is over New York’s JFK International Airport. Duffy replies, “Okay, I know where that is,” and then, he will recall, “we started heading right down to Long Island.” [Aviation Week and Space Technology, 6/3/2002; ABC News, 9/11/2002]
WTC Crash Apparently Not Discussed - However, it appears that neither Duffy nor the person he speaks with at NEADS mention the plane crash at the WTC during their conversation. Duffy will say that when he is subsequently informed that a second plane has hit the WTC (see (9:03 a.m.) September 11, 2001 and 9:06 a.m.-9:07 a.m. September 11, 2001), he is unaware that Flight 11 has already hit the WTC. [ABC News, 9/11/2002; Filson, 10/22/2002; 9/11 Commission, 1/7/2004 pdf file] And yet Duffy and personnel at NEADS have already been informed of that first crash.
Pilot and NEADS Previously Notified of Crash - Duffy has just been told of the crash during his conversation with the Boston Center controller (see 8:55 a.m. September 11, 2001). [Federal Aviation Administration, 9/11/2001] NEADS personnel learned of it at 8:51 a.m. (see 8:51 a.m. September 11, 2001), although there is now some confusion on the NEADS operations floor over whether the plane that crashed was indeed Flight 11 (see 8:55 a.m.-8:57 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 20; Vanity Fair, 8/1/2006] It will later be impossible to ascertain exactly what is said in the current conversation between Duffy and NEADS. Although tape recorders should be recording every radio channel at NEADS, because of a “technical issue,” the positions of Hedrick and his weapons director technician, Bradley Gardner, are supposedly not recorded (see (8:30 a.m.-3:00 p.m.) September 11, 2001). [9/11 Commission, 5/25/2004; 9/11 Commission, 7/24/2004, pp. 459; Vanity Fair, 8/1/2006]
Duffy Searches for Flight 11 on Radar Scope - Duffy will recall that following the call with NEADS, he is looking at his radar scope “to try and find a radar contact over the Kennedy sector with the hijacked aircraft.” Duffy will again contact NEADS to request “bogey dope” a few minutes later, and during that call is informed of the second plane hitting the WTC. [Filson, 2003, pp. 60; 9/11 Commission, 1/7/2004 pdf file]

Entity Tags: Timothy Duffy, Steve Hedrick, Northeast Air Defense Sector

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

The jet fuel that spilled from Flight 11 when it hit the North Tower (see 8:46 a.m. September 11, 2001) has mostly burned up by this time. The National Institute of Standards and Technology (NIST), which investigates the collapses, will say “The initial jet fuel fires themselves lasted at most a few minutes.” [National Institute of Standards and Technology, 9/2005, pp. 183] Engineering professor Forman Williams will say the jet fuel “burned for maybe 10 minutes.” [Popular Mechanics, 3/2005] Flight 11, a Boeing 767, had a fuel capacity of 23,980 gallons, but was only carrying about 10,000 gallons when it hit the WTC. NIST will estimate that less than 1,500 gallons were consumed in a fireball inside the tower and a comparable amount was consumed in the fireballs outside the building. Therefore, approximately 7,000 gallons splashed onto the office furnishings and started fires on various floors. However, after the jet fuel is used up, office fires burn until the building collapses. NIST will calculate that there were about four pounds per square foot of combustibles in the office space, or about 60 tons per floor. Offices in the WTC actually have fewer combustibles than some other similar spaces due to the small number of interior walls and limited bookshelf space. NIST will later find that only three of sixteen perimeter columns it recovers reached a temperature of 250°C and neither of the two core columns it retrieves reached this temperature. NIST will also find that none of the samples it acquires reaches a temperature above 600°C (see August 27, 2003). Although steel does not melt until its temperature is about 1,600°C, it may begin to lose significant strength at over 500°C. [National Institute of Standards and Technology, 9/2005, pp. 20, 29, 24, 77] The jet fuel will also burn up in the South Tower about 10 minutes after it is hit (see 9:13 a.m. September 11, 2001).

Entity Tags: Forman Williams, World Trade Center, National Institute of Standards and Technology

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Anthony Whitaker.Anthony Whitaker. [Source: ABC News]Sergeant Alan DeVona, an officer with the Port Authority Police Department (PAPD), calls for the evacuation of the Twin Towers over a PAPD radio channel, and his colleague, Captain Anthony Whitaker, then calls for the evacuation of the entire World Trade Center complex, but their orders are apparently not passed on [Port Authority of New York and New Jersey, 11/12/2001, pp. 19 pdf file; 9/11 Commission, 5/18/2004 pdf file; Dwyer and Flynn, 2005, pp. 78-79; National Institute of Standards and Technology, 9/2005, pp. 200-202] DeVona, the PAPD patrol sergeant at the WTC, is currently in the lobby of the North Tower, coordinating with emergency agencies as they arrive there. [Devona, 3/28/2002, pp. 24 pdf file] Whitaker, the PAPD commanding officer at the WTC, is outside the Twin Towers, looking up at the burning North Tower. [Fink and Mathias, 2002, pp. 25; Murphy, 2002, pp. 184]
Officers Request Evacuation of the WTC - At 8:59 a.m., DeVona calls for the evacuation of the Twin Towers. “As soon as we’re able,” he says over the PAPD radio channel, “I want to start a building evacuation, Building 1 [i.e. the North Tower] and Building 2 [i.e. the South Tower], till we find out what caused this.” Immediately after DeVona says this, at 9:00 a.m., Whitaker makes a similar request over the same radio channel. “Let’s begin an evacuation of the entire complex,” he says. “All buildings, copy?” [Port Authority of New York and New Jersey, 11/12/2001, pp. 19 pdf file; National Institute of Standards and Technology, 9/2005, pp. 200-201] Unlike DeVona, Whitaker is ordering the evacuation of not just the Twin Towers, “but also the five other buildings throughout the 16-acre complex—the mercantile exchange, offices of major investment banking concerns, and government agencies, including the FBI, the Secret Service, and the CIA,” according to New York Times reporters Jim Dwyer and Kevin Flynn. [Dwyer and Flynn, 2005, pp. 79] Whitaker has decided to evacuate the WTC complex “because of the danger posed by highly flammable jet fuel from Flight 11,” which crashed into the North Tower at 8:46 a.m. (see 8:46 a.m. September 11, 2001), and “because of the magnitude of the calamity in the North Tower,” according to the 9/11 Commission. [9/11 Commission, 5/18/2004 pdf file; 9/11 Commission, 7/24/2004, pp. 293]
Request Is the Second Time Evacuation Is Called For - Whitaker will later say that his current request is the “second time” he has called for the evacuation of the WTC complex. He will recall making his previous request—for “a full-scale evacuation of the entire complex”—shortly after Flight 11 crashed. [Fink and Mathias, 2002, pp. 23-25; Murphy, 2002, pp. 180-181, 184-185] Transcripts of PAPD radio transmissions will show that an evacuation was requested at 8:49 a.m., but only for the upper floors of the North Tower (see 8:49 a.m. September 11, 2001). [Port Authority of New York and New Jersey, 9/11/2001 pdf file; National Institute of Standards and Technology, 9/2005, pp. 195] And according to some accounts, that request was made by DeVona, not Whitaker. [Port Authority of New York and New Jersey, 11/12/2001, pp. 16 pdf file; Devona, 3/28/2002, pp. 24 pdf file; Dwyer and Flynn, 2005, pp. 78]
Officer Repeats Order, for the Written Record - At 9:01 a.m., an officer at the PAPD desk in Building 5 of the WTC asks if they should evacuate their building. DeVona instructs the officer to wait, saying, “Stand by on Building 5.” Whitaker then asks the officer at the PAPD desk if they have started a “chrono log” yet. [Port Authority of New York and New Jersey, 11/12/2001, pp. 19 pdf file; National Institute of Standards and Technology, 9/2005, pp. 201] A “chrono” is a written record of what the PAPD is doing. [Murphy, 2002, pp. 182] The officer replies, “That’s affirmative.” At 9:02 a.m., Whitaker repeats his previous instruction, apparently to make sure it is officially recorded. He says: “For the chrono, evacuate all buildings in the complex. You copy? All building in the complex.” The officer at the PAPD desk acknowledges the instruction and then radios all PAPD units in the field, and tells them to evacuate “all tenants in the buildings… at the Trade Center.” [Port Authority of New York and New Jersey, 9/11/2001 pdf file; Port Authority of New York and New Jersey, 11/12/2001, pp. 19 pdf file; National Institute of Standards and Technology, 9/2005, pp. 202]
Orders Not Passed on to Other Agencies - It is unclear whether DeVona and Whitaker’s orders to evacuate the WTC are passed on. Their orders are given over PAPD radio channel W, which cannot be heard by the deputy fire safety directors in the Twin Towers, who are able to make announcements over the buildings’ public address systems. [WTC News, 8/1995 pdf file; 9/11 Commission, 7/24/2004, pp. 293; National Institute of Standards and Technology, 9/2005, pp. 200-202] According to the 9/11 Commission, there is “no evidence” that the orders are “communicated to officers in other Port Authority Police commands or to members of other responding agencies.” [9/11 Commission, 5/18/2004 pdf file] Despite this, an announcement is made over the public address system in the South Tower, advising workers to evacuate, at 9:02 a.m. (see 9:02 a.m. September 11, 2001). Attempts to order workers to evacuate the North Tower are unsuccessful because that building’s public address system was damaged by the plane crash (see (Between 8:47 a.m. and 8:55 a.m.) September 11, 2001). [New York Times, 5/18/2004]

Entity Tags: Alan DeVona, Anthony Whitaker, Port Authority Police Department

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Flight 175 hits the WTC South Tower. The picture was taken from a traffic helicopter.Flight 175 hits the WTC South Tower. The picture was taken from a traffic helicopter. [Source: WABC 7/ Salient Stills]Flight 175 hits the South Tower of the World Trade Center (Tower Two). Seismic records pinpoint the time at six seconds before 9:03 a.m. (rounded to 9:03 a.m.). Hijackers Marwan Alshehhi, Fayez Ahmed Banihammad, Mohand Alshehri, Hamza Alghamdi, and Ahmed Alghamdi presumably are killed instantly, and many more in the tower will die over the next few hours. [New York Times, 9/12/2001; CNN, 9/12/2001; CNN, 9/17/2001; 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; Associated Press, 8/21/2002; USA Today, 9/2/2002] According to the NIST report, the crash time is 9:02:59. [National Institute of Standards and Technology, 9/2005, pp. 38] According to the 9/11 Commission Report, the crash time is 9:03:11. [9/11 Commission, 7/24/2004, pp. 8] Millions watch the crash live on television. The plane strikes the 77th through 85th floors in the 110-story building. Approximately 100 people are killed or injured in the initial impact; 600 people in the tower eventually die. The death toll is far lower than in the North Tower because about two-thirds of the South Tower’s occupants have evacuated the building in the 17 minutes since the first tower was struck. [USA Today, 12/20/2001; National Institute of Standards and Technology, 9/2005, pp. 5-9, 41] The combined death toll from the two towers is estimated at 2,819, not including the hijackers. [Associated Press, 8/21/2002] The impact severs some columns on the south side of the South Tower. Each of the Twin Towers 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 is traveling at an estimated speed of around 500 mph (see October 2002-October 2005), severs 33 of the building’s 236 perimeter columns and damages another one. [National Institute of Standards and Technology, 9/2005, pp. 39] The perimeter columns bear about half of the tower’s weight, so the damage to them reduces the tower’s ability to bear gravity loads by about 7.1 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 be able to damage the core even after crashing through the exterior wall (see 8:46 a.m. September 11, 2001). [National Institute of Standards and Technology, 9/2005, pp. 107] According to NIST’s base case model, five of the core columns are severed and another five suffer some damage. [National Institute of Standards & Technology, 9/2005, pp. 235 pdf file] This may reduce the tower’s ability to bear loads by a further approximately 8 percent, meaning that the aircraft impact accounted for a loss of about 15 percent of the building’s strength. This damage will be cited as an event contributing to the building’s collapse after 9/11 (see October 23, 2002 and October 19, 2004). NIST’s base case estimate of damage to the North Tower’s core will be similar, even though the aircraft impact there was dissimilar (see 8:46 a.m. September 11, 2001). Flight 11 hit the North Tower’s core head on, whereas Flight 175 only hits the corner of the South Tower’s core. [National Institute of Standards and Technology, 9/2005, pp. 20-23, 38-41] In addition, some of the fireproofing on the steel columns and trusses may be dislodged (see 8:46 a.m. September 11, 2001). [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 the National Institute of Standards and Technology (NIST) will try to estimate the damage to fireproofing using a series of computer models. Its severe case model (see (October 2002-October 2005)) will predict that 39 of the 47 core columns are stripped of their fireproofing on one or more floors and that fireproofing is stripped from trusses covering 80,000 ft2 of floor area, the equivalent of about two 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. 41] According to NIST, less fireproofing is stripped from the North Tower (see 8:46 a.m. September 11, 2001).

Entity Tags: World Trade Center, Marwan Alshehhi, Fayez Ahmed Banihammad, Hamza Alghamdi, National Institute of Standards and Technology, Ahmed Alghamdi, Mohand Alshehri

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Larry Cockell.Larry Cockell. [Source: Saint Louis University]Brian Stafford, the director of the Secret Service, activates the Director’s Crisis Center (DCC) at Secret Service headquarters in order to manage the Secret Service’s response to the terrorist attacks. [Secret Service, 9/11/2001; United States Secret Service, 10/1/2001] The DCC is located on the ninth floor of the Secret Service headquarters in Washington, DC, and is used to direct operations in emergencies. [Kessler, 2009, pp. 23-24] It is unclear exactly when it is activated. Larry Cockell, the deputy director of the Secret Service, will later say that the crisis center is activated after he receives “a call from the duty desk” informing him “that we were getting intelligence that there was a potential hijacking.” [Peter Schnall, 10/24/2004] According to a Secret Service timeline provided to the 9/11 Commission, it is activated at 9:00 a.m. [Secret Service, 9/11/2001] But Danny Spriggs, the assistant director of the Secret Service’s Office of Protective Operations, will say that Stafford makes the decision to activate the DCC “after the two airplanes crashed into the World Trade Center towers,” meaning some time after 9:03 a.m. [United States Secret Service, 10/1/2001] Stafford apparently thought the first crash at the WTC (see 8:46 a.m. September 11, 2001) was accidental, and only realized a terrorist attack was under way when the second plane hit the WTC at 9:03 a.m. (see 9:03 a.m. September 11, 2001). “I thought and hoped that it was an accident,” he will recall. “But when the second one hit, we knew that it wasn’t.” [Peter Schnall, 10/24/2004] Spriggs will say that when he arrives at the DCC, at around 9:35 a.m., Stafford and Cockell are already there (see (9:35 a.m.) September 11, 2001). [United States Secret Service, 10/1/2001] However, although the DCC is activated now, the Secret Service will not implement an “emergency call-up” of all its personnel until after 9:37 a.m., when the Pentagon is hit (see After 9:37 a.m. September 11, 2001). [US News and World Report, 12/1/2002]

Entity Tags: Carlton Danny Spriggs, Larry Cockell, Brian L. Stafford, US Secret Service

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Michael Miller.Michael Miller. [Source: US Navy]A number of White House staffers who are visiting New York make their way back to Washington, DC, following the attack on the Pentagon. About 15 members of the White House staff, including Joseph Hagin, the deputy chief of staff for operations, and Captain Michael Miller, the deputy director of the White House Military Office, are in New York conducting the “survey trip” for President Bush’s appearance at the United Nations General Assembly later in the month (see September 10, 2001).
Staffers Learn of Crashes while Visiting US Mission to the UN - Earlier this morning, they went to the US Mission to the United Nations for some preliminary meetings with the mission staff about the president’s forthcoming visit. In a conference room there, shortly after Flight 11 hit the World Trade Center (see 8:46 a.m. September 11, 2001), Miller informed Hagin of the crash. After seeing the early coverage of the incident on television, Hagin called the military aide who is with the president in Sarasota, Florida, to check if he was aware of what had happened. The military aide told him, “We’re on it.”
Staffers Taken to Police Station - After the White House staffers watched the second plane hitting the WTC live on TV, a State Department security officer told Hagin: “Sir, you need to get out of here as quickly as possible. There are reports of other planes inbound into the city.” The White House staffers were then taken by the Secret Service to a police station in Midtown Manhattan, where it was thought they would be safe. From there, Hagin called Josh Bolten, the deputy White House chief of staff for policy, who is at the White House. As the attacks were considered to be “just a New York incident” at that time, Hagin will later recall, Bolten and his colleagues decided that Hagin “should go down and be with the mayor, and… be the federal face in New York for the time being.”
Some Staffers Fly toward Nebraska to Meet President - The New York City police and the Secret Service had been trying to work out how to get Hagin to Ground Zero. But when the Pentagon is attacked at 9:37 a.m. (see 9:37 a.m. September 11, 2001), they decide that the White House staffers should return to Washington. The staffers are driven to Dover Air Force Base in Delaware. There, they are split up. Eight of them, including Hagin, get on a military plane and head toward Offutt Air Force Base in Nebraska to meet the president, who has been taken to the base (see 2:50 p.m. September 11, 2001). However, as they are flying over Missouri, they learn that Bush has decided to come back to Washington (see (4:00 p.m.) September 11, 2001 and (4:33 p.m.) September 11, 2001). Therefore, their plane turns around and heads to the capital.
Hagin and Other Staffers Return to White House - After they land at Andrews Air Force Base, just outside Washington, the staffers are driven to the White House. The time when they arrive there is unstated, but it is presumably around late afternoon or early evening. At the White House, Hagin goes to work immediately. [National Journal, 8/31/2002; Cincinnati Enquirer, 1/20/2003] As the deputy chief of staff for operations, he is a key member of the White House staff. He is responsible for the management and administrative functions of the White House, plans all of the president’s travel, and oversees the president’s schedule. [Cincinnati Enquirer, 10/10/2002; Washington Post, 7/4/2008] Hagin will recall that, after reaching the White House, he is “very involved in the continuity of government and just how, operationally, we were going to deal with this.” He will remain at the White House for the next two days. [National Journal, 8/31/2002; Cincinnati Enquirer, 1/20/2003]

Entity Tags: Joseph W. Hagin, Michael H. Miller, New York City Police Department, US Secret Service, Joshua Bolten

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Stacia Rountree.Stacia Rountree. [Source: Vanity Fair]Colin Scoggins, the military liaison at the FAA’s Boston Center, contacts NORAD’s Northeast Air Defense Sector (NEADS) and incorrectly notifies it that another aircraft, Delta Air Lines Flight 1989, is a possible hijacking. [9/11 Commission, 2004; Vanity Fair, 8/1/2006] Boston Center previously called NEADS at 9:27 and said that Delta 1989 was missing (see 9:27 a.m. September 11, 2001). [North American Aerospace Defense Command, 9/11/2001; 9/11 Commission, 5/23/2003]
NEADS Technicians Respond - At NEADS, Stacia Rountree, the ID technician who takes Scoggins’s call, announces to her colleagues: “Delta ‘89, that’s the hijack. They think it’s possible hijack.… South of Cleveland.” The plane’s transponder is still on, and she adds, “We have a code on him now.” Rountree’s team leader, Master Sergeant Maureen Dooley, instructs: “Pick it up! Find it!” The NEADS technicians quickly locate Delta 1989 on their radar screens, just south of Toledo, Ohio, and start alerting other FAA centers to it. [Vanity Fair, 8/1/2006; Spencer, 2008, pp. 177] NEADS mission crew commander Major Kevin Nasypany will be notified by his staff of the suspected hijacking at about 9:41 or 9:42 a.m. [9/11 Commission, 1/22/2004 pdf file] NEADS never loses track of Delta 1989. It will follow it on radar as it reverses course over Toledo, heads east, and then lands in Cleveland (see (10:18 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 28] It will order Air National Guard fighter jets from Selfridge and Toledo to intercept the flight (see (9:55 a.m.) September 11, 2001 and 10:01 a.m. September 11, 2001). [Spencer, 2008, pp. 178-179] But it will soon learn that Delta 1989 is not in fact hijacked. [9/11 Commission, 7/24/2004, pp. 28]
Cleveland Center, Not Boston, Handling Delta 1989 - Although Boston Center notifies NEADS of the suspected hijacking, Delta 1989 is in fact being handled by the FAA’s Cleveland Center. [USA Today, 8/13/2002; 9/11 Commission, 7/24/2004, pp. 10-12] Cleveland Center air traffic controllers suspected that Delta 1989 had been hijacked at around 9:30 a.m. (see (9:28 a.m.-9:33 a.m.) September 11, 2001), but apparently only informed the FAA’s Command Center, and not NEADS, of this. [USA Today, 8/13/2002] To explain why Boston Center alerts NEADS to the flight, the 9/11 Commission will later comment that, “Remembering the ‘we have some planes’ remark” (see 8:24 a.m. September 11, 2001), the Boston Center simply “guessed that Delta 1989 might also be hijacked.”
Similar to First Two Hijacked Planes - Like Flights 11 and 175, the two aircraft that have crashed into the World Trade Center (see 8:46 a.m. September 11, 2001 and 9:03 a.m. September 11, 2001), Delta 1989 took off from Boston’s Logan Airport. [9/11 Commission, 7/24/2004, pp. 27-28] According to the New York Times, it left there at about the same time as Flights 11 and 175 did, meaning around 8:00 to 8:15 a.m. [New York Times, 10/18/2001; 9/11 Commission, 7/24/2004, pp. 32] Like those two aircraft, it is a Boeing 767. [USA Today, 8/13/2002; 9/11 Commission, 7/24/2004, pp. 27-28] But, unlike those flights, its transponder has not been turned off, and so it is still transmitting a beacon code. [9/11 Commission, 7/24/2004, pp. 28; Vanity Fair, 8/1/2006] It is unclear what Delta 1989’s intended destination is. According to some accounts, like Flights 11 and 175 were, it is bound for Los Angeles. [Associated Press, 9/11/2001; New York Times, 10/18/2001; USA Today, 8/13/2002; Arizona Daily Star, 9/24/2007; Spencer, 2008, pp. 167] Other accounts will say that its destination is Las Vegas. [9/11 Commission, 7/24/2004, pp. 28; Vanity Fair, 8/1/2006] Personnel at NEADS are apparently informed that Las Vegas is the intended destination. Around this time, one member of staff there tells her colleagues that the flight is “supposed to go to Vegas.” [North American Aerospace Defense Command, 9/11/2001]
One of Numerous Incorrect Reports - The 9/11 Commission will comment: “During the course of the morning, there were multiple erroneous reports of hijacked aircraft (see (9:09 a.m. and After) September 11, 2001). The report of American 11 heading south was the first (see 9:21 a.m. September 11, 2001); Delta 1989 was the second.” [9/11 Commission, 7/24/2004, pp. 28]

Entity Tags: Maureen Dooley, Stacia Rountree, Boston Air Route Traffic Control Center, Colin Scoggins, Northeast Air Defense Sector, Kevin Nasypany

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Twenty minutes after the 9/11 attacks in New York (see 8:46 a.m. September 11, 2001 and 9:03 a.m. September 11, 2001) and Washington (see 9:37 a.m. September 11, 2001), a bomb truck is stationed in downtown Oklahoma City, in preparation for any potential bombing related to the 1995 Oklahoma City bombing (see 8:35 a.m. - 9:02 a.m. April 19, 1995). Additionally, an Oklahoma County Sheriff’s Department command post is activated where convicted bombing conspirator Terry Nichols (see September 5, 2001) is being held. [The Oklahoman, 4/2009]

Entity Tags: Terry Lynn Nichols

Timeline Tags: Complete 911 Timeline, US Domestic Terrorism

Dutchess County Airport.Dutchess County Airport. [Source: Phillip Capper]Tom White, a New York air traffic controller, incorrectly reports over an FAA teleconference that the first aircraft to hit the World Trade Center appears to have been a Sikorsky helicopter. [Federal Aviation Administration, 9/11/2001; Federal Aviation Administration, 1/2/2002 pdf file; 9/11 Commission, 5/21/2004] White is an operations manager at the FAA’s New York Terminal Radar Approach Control (TRACON) in Westbury, Long Island. [9/11 Commission, 12/15/2003 pdf file] He says over the FAA teleconference that the Sikorsky helicopter had been heading south from Poughkeepsie, New York, and appeared to hit the WTC at 8:27 a.m. (see 8:27 a.m. September 11, 2001)—nearly 20 minutes before the first crash there actually took place (see 8:46 a.m. September 11, 2001).
TRACON Previously Said Small Plane Hit the WTC - About 20 minutes earlier, someone from the TRACON—presumably White—suggested over the teleconference that the first aircraft to hit the WTC was a small twin-engine plane. At around 9:55 a.m. they said: “I think we’ve identified the location of a departure point for aircraft number one [presumably a reference to the plane that hit the North Tower]. At approximately 12:03 Zulu time [i.e. 8:03 a.m. Eastern time], aircraft number one appears to have departed Poughkeepsie airport and established a southerly heading at a speed of about 160 knots [i.e. 184 miles per hour]. The profile looks like it might be a light twin.” Asked if they had any more information, the TRACON employee replied: “I tried to get in touch with Poughkeepsie tower. However, the phone lines are overloaded and the circuits are busy.” [Federal Aviation Administration, 9/11/2001] The “Poughkeepsie airport” the helicopter took off from is presumably Dutchess County Airport. Sikorsky bases a fleet of its S-76 helicopters at Dutchess County Airport, which it dispatches to the New York metro areas as needed. [Site Selection, 5/2000; Aviation International News, 8/1/2003] Poughkeepsie is about 70 miles north of New York City. [Pittsburgh Post-Gazette, 2/3/2008]
Radar Information Suggests Helicopter Hit WTC - White now gives an update over the FAA teleconference, and suggests the first aircraft to hit the WTC was in fact a helicopter. He says: “We tracked a Sikorsky helicopter… from Poughkeepsie to the Trade Center. It appeared to fly into the Trade Center at 12:27 [Zulu time, or 8:27 a.m. Eastern time]. That is preliminary information.” White then clarifies that this conclusion has been reached partly through replaying radar data. He says: “[T]he only target that we saw in the vicinity of the Trade Center at 12:27, to fly into the Trade Center, we, we played the radar and tracked it up through Westchester and Stewart. We had a departure off a Poughkeepsie at 12:03. The tower says the only thing they had southbound at that time was a Sikorsky helicopter, which is consistent with the speed that we followed it down.” [Federal Aviation Administration, 9/11/2001; Federal Aviation Administration, 9/11/2001]
Long Delay before False Information Is Corrected - The New York TRACON’s reports about a helicopter or small plane hitting the WTC are subsequently confirmed to be mistaken. However it apparently takes several hours before the erroneous information is corrected. David LaCates, the deputy operations manager at the FAA’s New York Center, will tell the 9/11 Commission that “he did hear rumors that the aircraft that struck the WTC was in fact a small airplane from Poughkeepsie,” and he “believes this rumor persisted for over an hour.” [9/11 Commission, 10/2/2003 pdf file] According to one FAA chronology of this day’s events, it is only at 1:00 p.m. that the “Sikorsky helicopter” is “now believed not to have hit the WTC.” [Federal Aviation Administration, 1/2/2002 pdf file] Another FAA chronology will state that at 1:04 p.m. it is reported that the Sikorsky helicopter “landed 20 minutes early, normal GE run at 12:28Z [i.e. 8:28 a.m. Eastern time] to WTC.” (It is unclear what is meant by “normal GE run.”) [Federal Aviation Administration, 9/11/2001]

Entity Tags: Tom White (FAA), David LaCates, Federal Aviation Administration, New York Terminal Radar Approach Control

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

American Airlines issues a statement confirming that it has lost two of its aircraft in “tragic incidents this morning.” The statement identifies the aircraft as “Flight 11, a Boeing 767 en route from Boston to Los Angeles,” and “Flight 77, a Boeing 757 operating from Washington Dulles to Los Angeles.” The statement adds, “Because of the heightened security due to the nature of today’s events, American said it is working closely with US government authorities and will not release more information at this time.” [Associated Press, 2001 pdf file; Associated Press, 9/11/2001; CNN, 9/12/2001] Flight 11 hit the North Tower of the World Trade Center at 8:46 a.m. (see 8:46 a.m. September 11, 2001) and Flight 77 hit the Pentagon at 9:37 a.m. (see 9:37 a.m. September 11, 2001). [9/11 Commission, 6/17/2004]

Entity Tags: American Airlines

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

One of the key variables in the computer simulations used by the National Institute of Standards and Technology (NIST) (see (October 2002-October 2005)) to explain the WTC collapses is the speed of the aircraft that hit the towers. However, there is no consensus on how fast the planes were traveling. The first estimate was contained in an initial research paper by engineers Zdenek Bazant and Yong Zhou, who stated that the planes were traveling at 342 miles per hour. [Bazant and Zhou, 1/2002 pdf file] However, the Federal Emergency Management Agency (FEMA) and American Society of Civil Engineers (ASCE) report said that the plane that hit the North Tower was traveling at 470 miles per hour, whereas the plane that hit the South Tower was traveling at 590 miles per hour (see May 1, 2002). [Federal Emergency Management Agency, 5/1/2002, pp. 31] NIST initially estimates speeds of 435 miles per hour for the plane that hit the North Tower and 497 miles per hour for the plane that hit the South Tower. These estimates closely match figures produced by the Massachusetts Institute of Technology, which finds speeds of 429 miles per hour and 503 miles per hour for the two planes. However, NIST is dissatisfied with these results and does a second study, which finds speeds of 466 and 545 miles per hour. It then uses speeds of 472 and 570 miles per hour in its severe case model, on which its final report is based. In this model, the simulation of the planes traveling faster means greater damage to the towers’ structure, making them more unstable. [Kausel, 5/2002 pdf file; National Institute of Standards & Technology, 9/2005, pp. 152-165 pdf file; National Institute of Standards and Technology, 9/2005, pp. 109]

Entity Tags: Zdenek Bazant, National Institute of Standards and Technology, World Trade Center, Yong Zhou, Massachusetts Institute of Technology, American Society of Civil Engineers, Federal Emergency Management Agency

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Matthys Levy.Matthys Levy. [Source: PBS]A report is made publicly available, which the Engineering News-Record calls the “most comprehensive study yet on the destruction of the World Trade Center.” The study was commissioned by WTC leaseholder Silverstein Properties Inc. to support a $7 billion insurance claim, and conducted by a team of engineers from several leading firms, including Weidlinger Associates, LZA Technology/Thornton-Tomasetti, and ARUPFire. It is intended to build on a previous study sponsored by FEMA (see May 1, 2002). The report’s findings are based on an analysis of original structural drawings, thousands of photos, and dozens of videos. Investigators used fire evaluation techniques and powerful computer software to simulate the condition of each tower at critical times between the planes’ impacts and the towers’ collapses. The earlier FEMA investigators had no access to such computer modeling. Matthys Levy, the chairman of Weidlinger Associates and one of the engineers on the study team, says, “The buildings had tremendous reserve capacity and that was reflected in all of the elements we analyzed. In fact, because there were so much excess capacity, the columns even in the impact floors did not buckle immediately, but failed as the result of the fire.” The report states that failure of the WTC’s steel floor supports (“trusses”) did not contribute to the collapses. Instead, the collapses were caused by the failure of steel structural columns that were either destroyed when the planes hit or lost fireproofing, leaving them vulnerable to the weakening effects of the ensuing fires. It says that debris and dust distributed by the plane crashes inhibited the fires, such that the average air temperatures on the impact floors were between 400 and 700°C (750-1,300°F): significantly lower than those associated with typical “fully developed” office fires. However, says Matthys Levy, “By the time the temperature inside the buildings reached 400 degrees, the steel would have lost approximately 50% of its strength. Eventually, gravity took over and the towers began to fall.” Then, according to the analysis led by researchers from LZA Technology/Thornton-Tomasetti, “Once collapse initiated in each tower, essentially all of the interior structure of the tower fell straight down with floors pancaking on top of one another. The network of perimeter steel columns and spandrels acted like a chute to funnel the interior contents into the tower footprint.” According to the computer simulations, the damage to the South Tower’s steel core columns was so severe that the tower should have collapsed immediately after the plane hit. Civil engineer John Osteraas says this incorrect result casts doubt upon some of the study’s predictions. The report concludes that the collapse of the South Tower did not cause or contribute to the subsequent collapse of the North Tower, thus supporting Silverstein Properties’ claim that the terrorist attack represented two occurrences, entitling it to two $3.5 billion insurance policy limits. A separate study commissioned by the insurers contradicts this (see October 23, 2002). The Silverstein report apparently does not examine the collapse of WTC Building 7, a 47-story skyscraper that also collapsed on 9/11 (see (5:20 p.m.) September 11, 2001). It has been passed on to the National Institute of Standards and Technology (NIST), which is undertaking its own investigation of the WTC collapses (see August 21, 2002). [New York Times, 9/30/2002; Business Insurance, 10/23/2002; Silverstein Properties, Inc., 10/23/2002 pdf file; Engineering News-Record, 10/25/2002; New York Times, 10/29/2002; Engineering News-Record, 11/4/2002; Real Estate Weekly, 4/30/2003]

Entity Tags: World Trade Center, Silverstein Properties, Thornton-Tomasetti Engineers, Weidlinger Associates, Matthys Levy

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Shyam Sunder.Shyam Sunder. [Source: NIST]The National Institute of Standards and Technology (NIST) releases nearly 500 pages of documents, detailing the latest findings of its investigation of the WTC collapses on 9/11. These include its hypotheses for the collapse sequences of each of the Twin Towers; details of their analysis of interviews with nearly 1,200 building occupants, emergency responders, and victims’ relatives; and information from their analysis of the emergency response and evacuation procedures. Their investigation into the collapses is based upon an analysis of thousands of photos and videos, examination of many of the elements used to construct the towers, and computer-enhanced modeling of the plane impacts and the spreading of the fires. Their hypothesis is that the towers collapsed ultimately due to the fires they suffered: As the fires burned, the buildings’ steel core columns buckled and shortened. This shifted more load to the buildings’ perimeter columns, which were already affected by the heat of the fires, and caused them to give way under the increased stress. Investigators have conducted a test with a reconstructed section of the WTC floor, and found that the original fireproofing was sufficient to meet the New York City building code. They say that had a typical office fire occurred in the towers, without the structural damage and the loss of some fireproofing caused by the plane impacts, it is likely the buildings would have remained standing. Lead investigator Dr. Shyam Sunder says, “The buildings performed as they should have in the airplane impact and extreme fires to which they were subjected. There is nothing there that stands out as abnormal.” NIST’s theories of why the WTC buildings collapsed conflict with an earlier investigation by FEMA, which claimed the collapse of the North Tower had begun in its core, rather than its perimeter columns (see May 1, 2002). [National Institute of Standards and Technology, 10/19/2004; New York Times, 10/20/2004]

Entity Tags: Shyam Sunder, National Institute of Standards and Technology, World Trade Center

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

The National Institute of Standards and Technology (NIST), which is conducting an investigation into the WTC collapses on 9/11, releases three new reports. Investigators say that the Twin Towers would probably have remained standing if the fireproofing material that surrounded the buildings’ structural steel had not been stripped away when the planes hit. Their report states that “[t]he jet fuel, which ignited the fires, was mostly consumed within the first few minutes after impact. The fires that burned for almost the entire time that the buildings remained standing were due mainly to burning building contents and, to a lesser extent, aircraft contents, not jet fuel.” However, they claim, without the loss of fireproofing during the planes’ impacts, the heat from the fires would have been insufficient to cause the buildings to collapse. They say that although the architects had in 1964 tested the impact of a Boeing 707 airplane crashing into the 80th floor of one of the towers, they never envisioned the intense fires that ensued. NIST also reports that the time taken by survivors from the North Tower to descend a flight of stairs was about double the slowest evacuation speed estimated in a standard fire engineering text. They state: “approximately 87 percent of the WTC tower occupants, including more than 99 percent below the floors of impact, were able to evacuate successfully.” However, they say, if each tower had been full when they were hit, as many as 14,000 people could have died. [National Institute of Standards and Technology, 4/5/2005; Associated Press, 4/5/2005; New York Times, 4/5/2005; Associated Press, 4/6/2005]

Entity Tags: World Trade Center, National Institute of Standards and Technology

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

National Institute of Standards and Technology (NIST) releases a 12-page appendix to its final reports on the WTC collapses (see October 26, 2005) detailing tests it conducted on samples of the type of fireproofing used in the WTC. An earlier NIST report had concluded that loss of fireproofing was a major factor in the collapses (see April 5, 2005). The appendix was not included in earlier drafts of the report (see June 23, 2005) [National Institute of Standards and Technology, 6/23/2005 pdf file; National Institute of Standards & Technology, 9/2005, pp. 263-274 pdf file; National Institute of Standards and Technology, 9/2005, pp. 149] NIST conducted a series of fifteen tests. In the tests projectiles were fired at fireproofing mounted on 12 inch x 12 inch plates, and steel bars with a one inch diameter. The fireproofing used in the tests was Blazeshield DC/F, one of the two grades of fireproofing used on the impact floors. In thirteen of the tests the projectiles were buckshot, which was fired at the steel samples from a modified shotgun at a distance of 29.5 ft. The other two tests used steel bolts and hexagon nuts, fired with less velocity and at closer range. According to NIST, “The test results support the assumption that, within the debris field created by the aircraft impact into WTC 1 and WTC 2, the SFRM [i.e., fireproofing] used for thermal insulation of structural members was damaged and dislodged.” [National Institute of Standards & Technology, 9/2005, pp. 83, 263-274 pdf file]

Entity Tags: National Institute of Standards and Technology, World Trade Center

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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