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Context of '(Between 1:30 p.m. and 2:00 p.m.) September 11, 2001: United Airlines Tells Deena Burnett It Is Unaware Flight 93 Has Crashed'

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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

At the United Airlines crisis center, at its headquarters outside Chicago, staff members watch Flight 93’s radar track until the plane crashes. United Airlines’ senior management has started to gather in the theater-like crisis center, a room that resembles NASA’s Mission Control. Although the airline still has hundreds of flights in the air, officials have highlighted only Flight 93’s path on the large Aircraft Situation Display screen. Even after the plane’s transponder has been switched off (see (9:40 a.m.) September 11, 2001), the flight can still be tracked, but officials can no longer determine its altitude. They watch as the plane’s speed fluctuates wildly while it heads toward Washington. Hank Krakowski, United Airlines’ director of flight operations, will later recall: “We knew what was going on. We could see the airplane headed toward the capital. We were wondering whether the military was going to intervene or not.” Those in the crisis center see Flight 93’s radar track stop moving at the time it crashes. A dispatcher determines the latitude and longitude of its last position and reports that it was south of Johnstown in Pennsylvania, about 120 miles from Washington. [Wall Street Journal, 10/15/2001; Longman, 2002, pp. 77-78 and 214; USA Today, 8/13/2002]

Entity Tags: Hank Krakowski, United Airlines

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Flight 93 crashed in the Pennsylvania countryside. Resue vehicles arrive in the distance.Flight 93 crashed in the Pennsylvania countryside. Resue vehicles arrive in the distance. [Source: Keith Srakocic/ Associated Press]Flight 93 crashes into an empty field just north of the Somerset County Airport, about 80 miles southeast of Pittsburgh, 124 miles or 15 minutes from Washington, D.C. Presumably, hijackers Ziad Jarrah, Ahmed Alhaznawi, Ahmed Alnami, Saeed Alghamdi, and all the plane’s passengers are killed instantly. [CNN, 9/12/2001; North American Aerospace Defense Command, 9/18/2001; Guardian, 10/17/2001; Pittsburgh Post-Gazette, 10/28/2001; USA Today, 8/13/2002; Associated Press, 8/21/2002; MSNBC, 9/3/2002] The point of impact is a reclaimed coal mine, known locally as the Diamond T Mine, that was reportedly abandoned in 1996. [Pittsburgh Tribune-Review, 9/12/2001; St. Petersburg Times, 9/12/2001; Pittsburgh Tribune-Review, 9/11/2002] Being “reclaimed” means the earth had been excavated down to the coal seam, the coal removed, and then the earth replaced and planted over. [Kashurba, 2002, pp. 121] A US Army authorized seismic study times the crash at five seconds after 10:06 a.m. [Kim and Baum, 2002 pdf file; San Francisco Chronicle, 12/9/2002] As mentioned previously, the timing of this crash is disputed and it may well occur at 10:03 a.m., 10:07 a.m., or 10:10 a.m.

Entity Tags: San Francisco Chronicle, Ziad Jarrah, Ahmed Alhaznawi, Saeed Alghamdi, NBC, Ahmed Alnami

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Hank Krakowski.Hank Krakowski. [Source: Unisys]After seeing Flight 93’s radar track stopping over Pennsylvania, a senior United Airlines official contacts an airport in that area and receives confirmation of what appears to be an airplane crash nearby. Along with other United Airlines managers, Hank Krakowski, United’s director of flight operations, has just been watching Flight 93 on a large screen in the crisis center at the airline’s headquarters, outside Chicago (see (9:36 a.m.-10:06 a.m.) September 11, 2001). A dispatcher has determined the plane’s last position was south of Johnstown, Pennsylvania, so Krakowski tries phoning the Johnstown airport. However, due to an apparent power failure, there is no reply. He has to call the airport manager’s cell phone number. He asks the manager: “We might have a plane down in your area there. See anything unusual?” The manager reports a black smoke plume visible about 30 miles to the south of the airport. Krakowski thinks, “We just watched one of our airplanes crash.” [Longman, 2002, pp. 214; USA Today, 8/13/2002] Therefore, by 10:15 a.m. according to the 9/11 Commission, United Airlines headquarters has “confirmed that an aircraft [has] crashed near Johnstown, Pennsylvania, and [it] believed that this was Flight 93.” [9/11 Commission, 8/26/2004, pp. 47]

Entity Tags: United Airlines, Hank Krakowski

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Unaware the aircraft has crashed, United Airlines flight dispatcher Ed Ballinger instructs Flight 93 not to divert to Washington. At 10:10, he sends a text message to Flight 93, stating: “Don’t divert to DC. Not an option.” A minute later, he resends this same message to it. [9/11 Commission, 1/27/2004; 9/11 Commission, 8/26/2004, pp. 46] Someone on Flight 93 had contacted the FAA at 9:30, requesting a new flight plan with the destination of Washington (see 9:30 a.m. September 11, 2001), and at 9:55 the pilot hijacker reprogrammed the plane’s navigational system for the new destination of Washington’s Reagan National Airport (see 9:55 a.m. September 11, 2001). United Airlines will not confirm that Flight 93 has crashed until around 10:15 (see (10:07 a.m.-10:15 a.m.) September 11, 2001), and will notify its employees of this at 10:17 (see 10:17 a.m. September 11, 2001).

Entity Tags: Ed Ballinger

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Andy Studdert, the chief operating officer of United Airlines, sends out an operational alert message to the airline’s personnel, informing them of the crash of Flight 93. The message states: “UAL 93-11 EWR-SFO has been involved in an accident. Crisis center has been activated.” [9/11 Commission, 8/26/2004, pp. 47] Along with other United Airlines managers, Studdert watched Flight 93’s radar track as it came to a halt on a screen in the airline’s crisis center, at its headquarters outside Chicago (see (9:36 a.m.-10:06 a.m.) September 11, 2001). By 10:15, United had learned from the manager of the Johnstown airport in Pennsylvania of a plume of smoke rising up in the area where Flight 93 crashed (see (10:07 a.m.-10:15 a.m.) September 11, 2001). [Longman, 2002, pp. 77 and 214]

Entity Tags: Andrew P. Studdert, United Airlines

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

United Airlines contacts American Airlines and notifies it of the crash of Flight 93. [9/11 Commission, 8/26/2004, pp. 47] Flight 93 crashed in Pennsylvania shortly after 10:00 a.m. (see (10:06 a.m.) September 11, 2001). United Airlines received confirmation of this by 10:15 (see (10:07 a.m.-10:15 a.m.) September 11, 2001).

Entity Tags: United Airlines, American Airlines

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

United Airlines issues a press release confirming that Flight 93 has crashed. Flight 93 went down in Pennsylvania shortly after 10:00 a.m. (see (10:06 a.m.) September 11, 2001). The release states: “United Airlines has confirmed one of its flights has crashed near Pittsburgh, Pennsylvania. United Flight 93, a Boeing 757 aircraft, is the flight number involved. The flight originated in Newark and was bound for San Francisco.” The release adds, “United is deeply concerned about a further flight, United Flight 175, a Boeing 767, which was bound from Boston to Los Angeles.” [United Airlines, 9/11/2001] Although Flight 175 hit the World Trade Center at 9:03 (see 9:03 a.m. September 11, 2001), United Airlines will not publicly confirm it has crashed until 11:53 a.m. (see 11:53 a.m. September 11, 2001).

Entity Tags: United Airlines

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

United Airlines finally issues a press release confirming that Flight 175 has crashed, nearly three hours after this aircraft hit the World Trade Center (see 9:03 a.m. September 11, 2001). The release states, “United Airlines has now confirmed that two of its aircraft have crashed.” These include “United Flight 175, a Boeing 767 aircraft, [that] departed from Boston at 7:58 a.m. local time, bound for Los Angeles, with 56 passengers onboard, two pilots and seven flight attendants.” [United Airlines, 9/11/2001] United Airlines previously issued a press release, at 11:17, confirming the crash of Flight 93 (see 11:17 a.m. September 11, 2001), but this had stated that the airline was, at that time, only “deeply concerned” about Flight 175. [United Airlines, 9/11/2001] However, at 9:22, the United Airlines System Operations Control manager had issued an advisory to all the airline’s facilities, stating that Flight 175 had been in an accident in New York (see 9:22 a.m. September 11, 2001). [9/11 Commission, 8/26/2004, pp. 26] And Colin Scoggins, the military liaison at the FAA’s Boston Center, will later claim that United confirmed to the center that Flight 175 was down, “within two or three minutes” (see (9:06 a.m.) September 11, 2001). [Vanity Fair, 8/1/2006]

Entity Tags: United Airlines

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

The Federal Aviation Administration (FAA) sends a fax to the White House Situation Room, giving positive identification of the four hijacked aircraft involved in the morning’s attacks. However, two of the four flight numbers it provides are wrong. [Draper, 2007, pp. 143] Yet, by late morning, American Airlines and United Airlines had already issued press releases confirming that the four planes that crashed were flights 11, 175, 77, and 93 (see 11:17 a.m. September 11, 2001, (11:18 a.m.) September 11, 2001, and 11:53 a.m. September 11, 2001). [Associated Press, 9/11/2001; United Airlines, 9/11/2001; United Airlines, 9/11/2001] Journalist and author Robert Draper will later comment that, while there is much heroism on September 11, the FAA’s erroneous fax is an example of how the day is also “marred by appalling haplessness.” [Draper, 2007, pp. 143]

Entity Tags: Federal Aviation Administration, White House

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Deena Burnett, whose husband Tom Burnett was on Flight 93, is told by United Airlines it isn’t aware this plane has crashed. Deena had earlier on learned of an aircraft crashing in Pennsylvania, and a police officer with her informed her that this was her husband’s flight. Yet in her own book, published in 2006, Deena Burnett will describe that she now calls “United Airlines and asked about Flight 93. ‘Were there any survivors?’” She will recall: “They said they didn’t know the plane had even crashed. They suggested I call back or they would contact me when they knew something.” According to her own description, Deena appears to make this call shortly before 11:00 a.m. Pacific Time, meaning close to 2:00 p.m. Eastern Time. [Burnett and Giombetti, 2006, pp. 71-72 and 79] Yet by 10:15 a.m. ET, United Airlines’ headquarters had confirmed that an aircraft had crashed in Pennsylvania, and believed this was Flight 93 (see (10:07 a.m.-10:15 a.m.) September 11, 2001). [9/11 Commission, 8/26/2004, pp. 47] And at 11:17 a.m. ET, the airline had issued a press release confirming the crash of Flight 93 (see 11:17 a.m. September 11, 2001). [United Airlines, 9/11/2001] At what time Deena Burnett hears back from United Airlines after making this call is unstated.

Entity Tags: United Airlines, Deena Burnett

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

No relatives of the Flight 93 passengers are waiting at San Francisco International Airport at the time when the plane is scheduled to have arrived there. A counseling center has been set up at the airport for any relatives that might show up, and dozens of clergy members gave gathered at United Airlines’ VIP lounge to await the families. San Francisco Mayor Willie Brown has arranged to come and meet them. But at 11:15 a.m. Pacific Time (2:15 p.m. Eastern Time), when Flight 93 was scheduled to arrive, no family members have shown up, nor have any arrived by midday (3:00 p.m. ET). Willie Brown cancels his trip to meet the families when it appears none will show up. Knight Ridder will suggest the reason no relatives have come is that United Airlines employees contacted many of them before they left home. [Associated Press, 9/12/2001; Knight Ridder, 9/12/2001] Also, United Airlines publicly confirmed that Flight 93 had crashed several hours earlier (see 11:17 a.m. September 11, 2001), so passengers’ relatives may have realized for themselves what has happened by now. [United Airlines, 9/11/2001] Another possible factor could be that many of the passengers—at least 16 out of a mere 33—were not originally scheduled to be on Flight 93, and only arranged to be on it at the last minute or switched from another flight (see Shortly Before September 11, 2001-Early Morning September 11, 2001), so their relatives may not initially realize they had been on the plane. [New York Times, 9/11/2002] In contrast, some relatives of passengers on the other three hijacked planes have gone to Los Angeles International Airport, the destination of those planes: The New York Times will describe “a few grieving relatives” there, and the Associated Press describes, “In Los Angeles, several dozen relatives met grief counselors at an airport hotel.” [Associated Press, 9/11/2001; New York Times, 9/12/2001]

Entity Tags: San Francisco International Airport, Willie Brown

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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