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American Airlines Flight 11

AA11's path from Logan International Airport in Boston to New York City
Hijacking
Date	September 11, 2001 (2001-09-11)
Summary	Terrorist suicide hijacking
Site	North Tower (WTC 1) of the World Trade Center, New York City, U.S. 40°42′44.5″N 74°00′46.9″W / 40.712361°N 74.013028°W / 40.712361; -74.013028
Total fatalities	c. 1,700 (2,763 combined with UA 175)
Aircraft
Aircraft type	Boeing 767-223ER
Operator	American Airlines
IATA flight No.	AA11
ICAO flight No.	AAL11
Call sign	AMERICAN 11
Registration	N334AA
Flight origin	Logan International Airport
Destination	Los Angeles International Airport
Occupants	92 (including 5 hijackers)
Passengers	81 (including 5 hijackers)
Crew	11
Fatalities	92
Survivors	0
Ground casualties
Ground fatalities	c. 1,600 in or near the North Tower of the World Trade Center

American Airlines Flight 11 was a domestic passenger flight that was hijacked by five al-Qaeda terrorists on the morning of September 11, 2001, as part of the September 11 attacks. The hijacked airliner was deliberately crashed into the North Tower of the World Trade Center complex in New York City, killing everyone still alive aboard the flight and resulting in the deaths of more than one thousand people in the top 18 stories of the skyscraper in addition to causing the demise of numerous others below the trapped floors, making it not only the deadliest of the four suicide attacks executed that morning in terms of both plane and ground fatalities, but also the single deadliest act of terrorism in human history and the deadliest plane crash of all time. The aircraft involved, a Boeing 767-200ER with 92 passengers and crew, was flying American Airlines' daily scheduled morning transcontinental service from Boston Logan International Airport in Massachusetts to Los Angeles International Airport in California.

The airplane left the runway at 07:59. Not more than 15 minutes after takeoff, the hijackers injured two people, murdered one, and breached the cockpit while forcing the passengers and crew to the rear of the aircraft against their will. The assailants quickly overpowered both the captain and the first officer and possibly killed them, allowing lead hijacker Mohamed Atta to take over the controls, having intensively trained as a pilot in the lead-up to the attacks. Air traffic controllers suspected that the flight was in distress because the crew were no longer responding. They realized the plane had been hijacked when Atta's falsely reassuring announcements for the hostages were transmitted to air traffic control instead of the cabin's PA system as intended. Two flight attendants were able to contact American Airlines and passed along information relevant to the situation, in particular casualties suffered by the passengers and crew.

Atta flew the plane into the tower's north face from floors 93 through 99 at 08:46 local time. The impact was witnessed by countless people in the streets of New York City as well as the nearby state of New Jersey, but few video recordings captured the moment. Jules Naudet captured the only known footage clearly depicting Flight 11's impact. The media quickly began reporting on the incident and speculated that the crash had been an accident. Seventeen minutes later, United Airlines Flight 175 crashed into the World Trade Center's South Tower at 09:03, instantly dispelling any notion it was accidental.

The damage caused by the plane and the fires ignited by its crash caused the North Tower to collapse at 10:28 that morning, resulting in hundreds of additional casualties. While the recovery effort at the World Trade Center site did lead to the discovery and identification of body fragments from certain individuals who boarded Flight 11, many have not been identified.

Flight

The aircraft involved in the hijacking was a Boeing 767-200ER with registration number N334AA The capacity of the aircraft was 158 passengers (9 in first class, 30 in business class and 119 in economy class), but the September 11 flight carried 81 passengers and 11 crew members. This was a light load at 58 percent capacity, but higher than the average load factor for Flight 11 on Tuesday mornings of 39 percent in the months preceding September 11. The crew members were Captain John Ogonowski (50), First Officer Thomas McGuinness Jr. (42) (a former Navy fighter pilot), purser Karen Martin and flight attendants Barbara Arestegui, Jeffrey Collman, Sara Low, Kathleen Nicosia, Betty Ong, Jean Roger, Dianne Snyder, and Amy Sweeney.

All 92 people on board were killed, including Frasier creator and executive producer David Angell, his wife Lynn Angell, actress Berry Berenson (widow of fellow actor Anthony Perkins), and Akamai Technologies co-founder Daniel Lewin. Family Guy creator Seth MacFarlane had been scheduled to be on the flight but overslept due to a hangover and arrived at the airport too late. Actor Mark Wahlberg was also scheduled to be on the flight but changed his plans and canceled his ticket the day before. Actress Leighanne Littrell, wife of Backstreet Boys singer Brian Littrell, had also previously been booked on the flight but, like Wahlberg, changed her plans.

Boarding

Portland, Maine

Mohamed Atta, the ringleader of the attacks, and fellow hijacker Abdulaziz al-Omari arrived at Portland International Jetport in Maine at 05:41 Eastern Daylight Time on September 11, 2001. At the Portland ticket counter, Atta asked ticket agent Mike Tuohey for his boarding pass for Flight 11. When Tuohey told Atta he would have to check in a second time when he reached Logan, Atta appeared on the verge of anger, telling Tuohey that he had been assured he would have "one-step check-in." Out of concern he was racially profiling Atta as an Arab terrorist, Tuohey did not budge or rise to his hostility, and simply told him that he would better hurry if he did not want to miss the flight. Although Atta still looked cross, he and Omari left the ticket counter for the Portland airport's security checkpoint.

They boarded Colgan Air Flight 5930, which was scheduled to depart at 06:00 and fly to Boston. Both hijackers had first class tickets with a connecting flight to Los Angeles; Atta checked in two bags, a green Travel Gear bag and a black Travelpro bag, while Omari checked in none. When they checked in, the Computer-Assisted Passenger Prescreening System (CAPPS) selected Atta for extra luggage scrutiny, but he boarded without incident.

The flight from Portland departed on time and arrived in Boston at 06:45. Three other hijackers, Waleed al-Shehri, Wail al-Shehri, and Satam al-Suqami, arrived at Logan Airport at the same time, having left their rental car in the airport parking facility. At 06:52, Marwan al-Shehhi, the hijacker pilot of United Airlines Flight 175, made a call from a pay phone in Logan Airport to Atta's cell phone. This call was apparently to confirm that the attacks were ready to begin.

Boston, Massachusetts

Since they were not given boarding passes for Flight 11 in Portland, Atta and Omari checked in and went through security in Boston. Suqami, Wail al-Shehri, and Waleed al-Shehri also checked in for the flight in Boston. Wail al-Shehri and Suqami each checked one bag; Waleed al-Shehri did not check any bags. CAPPS selected all three for a detailed luggage check. As the CAPPS' screening was only for luggage, the three hijackers did not undergo any extra scrutiny at the passenger security checkpoint.

First Officer Lynn Howland had just arrived in Boston after copiloting the flight from San Francisco that would be redesignated American Flight 11. As she walked off the aircraft and entered the passenger lounge, Atta approached her and asked if she would be flying the plane back across the country. When Howland told him she just brought the aircraft in, Atta turned his back and walked away. As he boarded Flight 11, Atta asked a gate agent whether the two bags he had checked earlier in Portland had been loaded onto the plane. In the rushed check-in after the flight from Portland, airline officials did not load Atta's bags on Flight 11.

By 07:40, all five hijackers were aboard the flight, scheduled to depart at 07:45. Atta sat in business class seat 8D with al-Omari in 8G and Suqami in 10B. Waleed and Wail al-Shehri sat in first class seats 2B and 2A. Shortly before takeoff, American Airlines flight service manager Michael Woodward walked aboard for a final check. He briefly passed Atta, making note of this passenger's brooding expression, and then left the plane. At 07:46, one minute behind schedule, the aircraft received clearance to push back from Gate B32, and was cleared to taxi to the runway at 07:50. The aircraft began its takeoff roll from Logan International Airport at 07:59 from runway 4R.

Hijacking

The 9/11 Commission estimated that the hijacking began at 08:14 when the pilots stopped responding to requests from the Boston Air Route Traffic Control Center (Boston ARTCC). At 08:13:29, as the aircraft was passing over central Massachusetts at 26,000 feet (7,900 m), the pilots responded to a request from Boston ARTCC to make a 20-degree turn to the right. At 08:13:47, Boston ARTCC told the pilots to ascend to a cruising altitude of 35,000 feet (11,000 m), but received no response. At 08:16, the aircraft leveled off at 29,000 feet (8,800 m) and shortly thereafter deviated from its scheduled path.

At 08:17:59, flight controllers at Boston Center heard a brief, unknown sound on the radio frequency used by Flight 11 and other nearby flights, a noise that was later described as sounding like a scream. Boston ARTCC made multiple attempts to talk to Flight 11 without reply. The commission believes that the hijackers were in absolute control of the aircraft by 08:20, six minutes after launching their assault. The flight's Mode-C transponder signal was then switched off by someone in the cockpit at 08:21. At 08:23 and 08:25, Aircraft Communication Addressing and Reporting System (ACARS) tried to contact the flight. The first message read, "Good morning, ATC looking for you on 135.32"; the other read, "Please contact Boston Center ASAP. They have lost radio contact and your transponder signal." Flight 11 did not reply.

Reports from flight attendants

According to flight attendants Amy Sweeney and Betty Ong, who contacted American Airlines during the hijacking, the hijackers had stabbed flight attendants Karen Martin and Barbara Arestegui and slashed passenger Daniel Lewin's throat. It is unknown how the hijackers gained access to the cockpit; FAA rules at the time required that the doors remain closed and locked during flight. Ong said she thought that the hijackers had "jammed their way" in.

The commission suggested they attacked the flight attendants to get a cockpit key, to force one of them to open the cockpit door, or to lure the captain or first officer out of the cockpit. It is theorized that the al-Shehri brothers made the first move by attacking Martin and Arestegui. Sweeney said that Martin was badly injured and being given oxygen. Sweeney and Ong said Arestegui's injuries were not as serious. Ong said she heard loud arguing after the hijackers entered the cockpit. It is believed that the hijackers either killed or incapacitated Ogonowski and McGuinness. Sweeney said that one of the hijackers had shown her a device with red and yellow wires that appeared to be a bomb. Ong and Sweeney said that the coach passengers did not seem to fully understand the peril, and were under the impression that there was a routine medical emergency in the front section of the plane, and that the other flight attendants were helping passengers and finding medical supplies. Ong said Lewin appeared to be dead, while Sweeney said that Suqami had attacked Lewin. Lewin was seated in 9B, and Suqami sat directly behind him in 10B.

One version of events is that Suqami attacked Lewin, unprovoked, to frighten other passengers and crew into compliance. Alternatively, Lewin, an American-Israeli Internet entrepreneur who understood Arabic, and had served as an officer in the elite Sayeret Matkal special operations unit of the Israel Defense Forces, may have attempted to stop the hijacking, and confronted one of the hijackers in front of him, unaware of Suqami behind him. Lewin is believed to be the first fatality in the 9/11 attacks. During a four-minute call to the American Airlines operations center, Ong provided information about lack of communication with the cockpit, lack of access to the cockpit, and that she thought someone had sprayed Mace in the business class cabin. She also provided the seat locations of the hijackers, which later helped investigators to determine their identities.

Hijacker's transmissions

At 08:24:38, a hijacker broadcast to Boston ARTCC. Air traffic controllers heard the hijacker announce, "We have some planes. Just stay quiet and you'll be O.K. We are returning to the airport." At 08:24:56 he announced, "Nobody move. Everything will be okay. If you try to make any moves, you'll endanger yourself and the airplane. Just stay quiet."

As Atta spoke English fluently, he likely made the transmissions. It is also possible that Atta's seatmate, al-Omari, accompanied him into the cockpit. Atta apparently tried to make an announcement to the passengers, but keyed the wrong switch and instead his voice was picked up and recorded by air traffic controllers. After Atta's transmissions and the inability to contact the airliner, air traffic controllers at Boston ARTCC realized that Flight 11 was being hijacked. At 08:26, after crossing the Massachusetts-New York border, the plane turned 100 degrees to the south, following the Hudson River that would lead directly to New York City. At 08:32, the Federal Aviation Administration (FAA) Command Center in Herndon, Virginia, notified FAA headquarters.

At 08:33:59, the hijacker announced a third and final transmission: "Nobody move, please. We are going back to the airport. Don't try to make any stupid moves." At 08:37:08, the pilots of United Airlines Flight 175 verified Flight 11's location and heading to flight control. Seconds before their plane was also hijacked, at 8:42 a.m., the pilots of Flight 175 informed New York Center that they previously heard a suspicious announcement over the radio as they were climbing out of Logan 28 minutes earlier, which would have been around the same time Flight 11 was hijacked. This particular transmission was never picked up by controllers on the ground unlike the other three, but the pilots reported hearing the words, "Everyone, stay in your seats."

Fighter jets dispatched

Boston ARTCC bypassed standard protocols and directly contacted the North American Aerospace Defense Command (NORAD) Northeast Air Defense Sector (NEADS) in Rome, New York. NEADS called on two F-15 fighter jets at Otis Air National Guard Base in Mashpee, Massachusetts, to intercept. Officials at Otis spent a few minutes getting authorization for the fighters to take off. The order to dispatch the fighters at Otis was given at 08:46, and the F-15s took off at 08:53, roughly seven minutes after American Airlines Flight 11 had already crashed into the North Tower. Of the four hijacked aircraft on 9/11, the nine minutes of advance notification about the hijacking of Flight 11 was the most time that NORAD had to respond before the aircraft crashed into its intended target.

Crash

At 8:37 a.m., Flight 11 began a rapid descent of 3,200 feet per minute toward New York City, gradually losing speed. Three minutes before impact, Atta completed his final turn toward Manhattan, flying south over the city in the direction of the World Trade Center. At 08:46, flight attendant Amy Sweeney panicked that her plane was "flying way too low" just as Atta deliberately crashed into the North Tower. The airplane, traveling about 440 miles per hour (710 km/h; 200 m/s; 380 kn) and loaded with around 10,000 U.S. gallons (38,000 L; 8,300 imp gal) of jet fuel, struck the skyscraper's northern façade between floors 93 and 99, its nose impacting the 96th floor. Hundreds were killed instantly, including everyone on the aircraft and numerous workers in the North Tower. Many who had been outside of the path of the crashing airliner were incinerated as its fuel exploded. Studies suggest that as many as 1,426 people may have been present on the top 18 floors of the North Tower when it was struck almost midway into its central core. The core housed three stairwells (A, B and C) extending from the roof to the ground floor, with a distance of just 70 feet (21 metres) between each one in the impact region. The size of the hijacked 767 easily severed all three, trapping close to a thousand crash survivors. All stairwells from floors 93 up to 99 were destroyed or blocked and elevator service was disrupted from the 50th floor upward. The airplane descended downward at an angle of about 10 degrees at impact, pushing rubble into stairwells as many as six stories below where it hit; consequently, the 92nd floor was also sealed off from the rest of the tower when falling debris from Flight 11's impact zone walled off each of its stairwells. The highest survivors in the North Tower came from the 91st floor, while anyone above was left to burn alive, asphyxiate, succumb to toxic exposure from ignited chemicals or be killed in the tower's eventual collapse. Some 100–200 people plummeted from the upper floors, most of whom died by jumping to escape the intense heat, smoke and flames. Light-to-moderate damage was reported on every floor from ground level to the 92nd, including collapsed walls, missing ceiling tiles, severed wires and smashed windows. The sprinkler system was severed by the impact, causing flooding on various floors throughout the tower. Moreover, burning jet fuel was channeled through the building via elevator shafts and ductwork, igniting small-scale fires on many floors between the 77th and 91st. Three major flash fires occurred in the 78th and 44th floor skylobbies as well as the main lobby at the base, causing fatal burns nearly a hundred floors below the impact. The shockwave was felt in both towers. The northern and western façades of the South Tower were battered by debris, and the explosion broke some windows in the South Tower. Prevailing winds from the northwest caused the top of the South Tower to become engulfed by the thick smoke pouring southeast, and a number of employees at that altitude reported that the fumes began filtering into their floors alongside the intense heat.

Countless people in both the city and state of New York as well as the adjacent state of New Jersey saw first-hand what had happened to the North Tower, and the smoke billowing over the horizon very quickly became visible from parts of Connecticut as well. Despite this, only four people happened to be recording at 08:46. French cameraman Jules Naudet, who was filming a documentary about the FDNY, rode with Battalion 1 to investigate a suspected gas leak in a storm drain at the intersection of Church and Lispenard streets, where he caught the only known clear footage of the plane flying into the tower. Pavel Hlava, a Czech immigrant, unknowingly taped the plane from far away while preparing to drive into the Brooklyn–Battery Tunnel from Brooklyn. Just south of the World Trade Center, the New York City-based television station WNYW had been filming in nearby City Hall Park when Flight 11 crashed into the tower offscreen. Reporter Dick Oliver picked up the camera and recorded the immediate aftermath. A webcam set up by Wolfgang Staehle at an art exhibit in Brooklyn to take images of Lower Manhattan every four seconds also captured stills of Flight 11 flying towards the North Tower and the explosion that followed.

Some reporters claimed that the plane that struck the North Tower was a "small, twin-engine jet," despite the size of the hole in the skyscraper. At 08:55, senior advisor to the president Karl Rove conveyed this misleading information to President George W. Bush as he arrived at Emma E. Booker Elementary School in Sarasota, Florida; the president's surmise was that the crash "must have been caused by pilot error." Shortly after, in an on-air phone call from his office at the CNN New York bureau, CNN vice president of finance Sean Murtagh reported that a large passenger commercial jet had hit the World Trade Center, and other television networks began interrupting regular broadcasting with news of the crash within minutes.

The general assumption was that Flight 11's crash was a tragic accident, although some news stations suggested it could have been on purpose. Though many people in the South Tower chose to evacuate after seeing what had happened in the North Tower, the Port Authority made the decision not to initiate an immediate full-scale evacuation of the South Tower immediately following the first plane crash, operating under the assumption that it was an accident. Seventeen minutes after the first impact, the World Trade Center's South Tower was hit by United Airlines Flight 175, confirming that the crash was deliberate.

Aftermath

After the crash, the North Tower burned for 102 minutes before collapsing at 10:28. Although the impact itself caused extensive structural damage, the long-lasting fire ignited by jet fuel was blamed for the structural failure of the tower. In addition to the aircraft passengers and building occupants, hundreds of rescue workers also died when the tower collapsed. Despite being the first of the two buildings to be hit, the North Tower was the second to collapse. Furthermore, it stood for nearly twice as long after being struck as the South Tower, with the latter burning for only 56 minutes before collapsing. This is because Flight 11 crashed into the North Tower at a lower speed and much higher up than Flight 175 did into the South Tower, leading to there being far less structural weight above the impact zone; the North Tower had 11 floors above the point of impact while the South Tower had more than twice that amount. Cantor Fitzgerald L.P., an investment bank on floors 101–105 of the North Tower, lost 658 employees, considerably more than any other employer.

Rescue workers at the World Trade Center site began to discover body fragments from Flight 11 victims within days of the attack. Some workers found bodies strapped to airplane seats and discovered the remains of a flight attendant with her hands bound, suggesting the hijackers might have used plastic handcuffs. Within a year, medical examiners had identified the remains of 33 victims who had been on board Flight 11. They identified two other Flight 11 victims, including purser Karen Martin, in 2006, while other unrelated body fragments were discovered near Ground Zero around the same time. In April 2007, examiners using newer DNA technology identified another Flight 11 victim. The remains of two hijackers, potentially from Flight 11, were also identified and removed from Memorial Park in Manhattan. The remains of the other hijackers have not been identified and are buried with other unidentified remains at this park.

Suqami's passport survived the crash and landed in the street below. Soaked in jet fuel, it was picked up by a passerby who gave it to a New York City Police Department (NYPD) detective shortly before the South Tower collapsed. Investigators retrieved Mohamed Atta's luggage, which had not been loaded onto the flight. The bags contained papers from Atta's studies in Germany and Egypt; Alomari's international driver's license and passport; a videocassette for a Boeing 757 flight simulator; and a folding knife and pepper spray. They also contained "The Last Night" document, with instructions to the hijackers and preparations for martyrdom and death. Further, the bags' contents identified the names of all 19 hijackers for the four crashed, September 11th flights. In a recording, a few months later in Afghanistan, Al Qaeda's leader, Osama bin Laden, took responsibility for the attack. The attack on the World Trade Center exceeded even bin Laden's expectations: he had expected only the floors above the plane strikes to collapse. The flight recorders for Flight 11 and Flight 175 were never found.

After the attacks, the flight number for the scheduled flight on the same route with the same takeoff time was changed, and as of 2024, is flown using an Airbus A321 instead of a Boeing 767. An American flag is flown on the jet bridge of gate B32 from which Flight 11 departed Logan Airport. An American flag is also flown on the jet bridge of gate 65B at Los Angeles Airport, where Flight 11 was scheduled to arrive.

In 2002, the first recipients of the annual Madeline Amy Sweeney Award for Civilian Bravery were Sweeney and Ong. Ogonowski also received a posthumous award. They were all residents of Massachusetts. Relatives of all three accepted the awards on their behalf.

On April 26, 2013, a piece of the wing flap mechanism from a Boeing 767 was discovered wedged between two buildings at Park Place, near where other landing gear parts were found. The onboard defibrillator from Flight 11 was found in 2014 during roadworks near Liberty Street.

At the National September 11 Memorial, the names of the 87 victims of Flight 11 are inscribed on the North Pool, on Panels N-1 and N-2, and Panels N-74 – N-76.

See also

• Indian Airlines Flight 814
• TWA Flight 847
• List of aircraft hijackings
• 1 World Trade Center (1971–2001)

Notes

1. It is impossible to definitively know exactly how many people died from the hijacking and crash of American Airlines Flight 11, since this crash and the one of United Airlines Flight 175 happened in the same place, at about the same time, and it is hard to distinguish who died from which plane. It is known for certain, however, that the sum of plane and ground fatalities is 2,763. In addition to the rough estimate of 1,600 ground fatalities blamed on Flight 11, the number of people aboard the hijacked flight was 92. The death toll of Flight 11 thus comes out to approximately 1,700 when rounded.
2. The aircraft was a Boeing 767-200(Extended Range "ER") model; Boeing assigns a unique code for each company that buys one of its aircraft, which is applied as an infix to the model number at the time the aircraft is built, hence "767-223ER" designates a 767-200 built for American Airlines (customer code 23).
3. ^ The precise number of those killed or trapped by Flight 11's impact has never been conclusively verified, although it is estimated that between 1,344 and 1,426 people were present on floors 92–110 at 08:46 and not a single one of them survived.
4. The massacre at Camp Speicher―often described as the second deadliest act of terrorism in history after 9/11―is said to have killed between 1,095 and 1,700 people. The upper estimate would tie it with the attack on the World Trade Center's North Tower, but until the true death toll of the massacre becomes known, then the hijacking and crash of Flight 11 was the deadliest act of terrorism on record.
5. While American Airlines Flight 11 is the overall deadliest aviation incident, the deadliest aviation accident is the Tenerife airport disaster in 1977.
6. Although the 9/11 Commission estimated the time of the hijacking to be 8:14, the pilots stopped responding to Boston ARTCC at 08:13:47, indicating the hijacking may have occurred slightly earlier.
7. Because of a news miscommunication, it was first reported that Ogonowski was held captive in the cockpit and had thought to activate the cockpit radio, to allow ground control to listen to remarks being made by the hijackers, although this assertion does not align with the description of events as laid out in the 9/11 Commission Report.
8. On Flight 93, Mark Rothenberg was stabbed to death prior to the hijacking, and seated in a similar position, just in front of the rear-most hijacker.
9. 9/11 Commission investigator Miles Kara does not subscribe to the belief that Atta mistakenly keyed the mic and "accidentally" broadcast his message; Kara suggests that Atta was, in part, attempting to sow confusion within the FAA, and was delivering a message to Marwan al-Shehhi on United Airlines Flight 175. Kara suggests that the hijackers would have known that passengers likely could monitor cockpit communications on Channel 9 of United's onboard entertainment system. Because both Flight 11 and Flight 175 departed on cross-country routes approximately at the same time, Kara explains the hijackers could feel confident that the two cockpits would be using the same radio frequency during the first minutes after takeoff. Under that scenario, Atta's "We have some planes" remark could be viewed as a signal to al-Shehhi that their plan was working and that the Flight 175 group should execute its piece of the attack. Although it is unknown whether al-Shehhi heard Atta's comment or was listening to Channel 9, Kara considers it likely. One piece of evidence he cites is the fact that al-Shehhi waited to initiate the hijacking until after Flight 175 had crossed into the airspace of a different air traffic control center. Kara believes that al-Shehhi knew the crossover took place because he heard the Flight 175 pilots say so. If that was the case, he also would have heard the earlier transmissions from Atta that were picked up in the cockpit of Flight 175 and reported later to air traffic control. Separately, John Farmer, senior counsel to the 9/11 Commission, raised questions about whether the sequence of the hijackings, in which two United flights were hijacked after American flights, might have been influenced by the terrorists' hope to use United Channel 9 to gather real-time intelligence on the other hijackings.
10. The exact time is disputed. The 9/11 Commission Report states that Flight 11 struck the North Tower at 8:46:40 a.m., NIST reports 8:46:30 a.m., and some other sources claim 8:46:26 a.m.

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Works cited

• Final Report of the 9/11 Commission on Terrorist Attacks Upon the United States (PDF) (Report). National Commission on Terrorist Attacks Upon the United States. July 22, 2004. Archived (PDF) from the original on August 16, 2021. Retrieved August 15, 2021.

External links

External image
Picture of aircraft Pre 9/11

• The Final 9/11 Commission Report
• 9-11 NTSB Report
• "Victims of the American Airlines Flight 11". Archived from the original on January 12, 2010. Retrieved November 20, 2007.
• American Airlines site explaining that all aircraft are accounted for at the Wayback Machine (archived September 11, 2001), September 11, 2001
• American Airlines site with condolences for deceased at the Wayback Machine (archived September 12, 2001), September 12, 2001

• American Airlines Flight 11
• 2001 fires in the United States
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• Accidents and incidents involving the Boeing 767
• Aircraft hijackings in the United States
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• Airliner accidents and incidents caused by hijacking
• Airliners involved in the September 11 attacks
• American Airlines accidents and incidents
• Aviation accidents and incidents in the United States in 2001
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• Logan International Airport
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