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] |
The ARINC San Francisco Communications Center. [Source: ARINC] | ARINC, a company that provides a backup communications capability for airborne flights, tries unsuccessfully to contact the hijacked Flight 11. [American Airlines, 9/11/2001, pp. 26-27; 9/11 Commission, 1/8/2004 pdf file] Peggy Houck, a flight dispatcher at the American Airlines System Operations Control center in Fort Worth, Texas, calls ARINC in San Francisco and says she needs "to get a hold of" Flight 11. Houck says Flight 11 is "ACARS-equipped" but not responding to ACARS messages (see 8:23 a.m.-8:25 a.m. September 11, 2001). [American Airlines, 9/11/2001, pp. 24-25; Federal Bureau of Investigation, 9/11/2001, pp. 5-7] (ACARS is a text messaging system that enables airline personnel to communicate with the pilots of an in-flight aircraft. [Federal Bureau of Investigation, 9/11/2001, pp. 14-17; 9/11 Commission, 8/26/2004, pp. 9] ) |
The ARINC employee Houck talks to says they will try to contact Flight 11 using ACARS, and then "SELCAL him." [American Airlines, 9/11/2001, pp. 24-25] ("SELCAL," short for "selective calling," is a technique that, by causing a chime to sound in the cockpit of an aircraft, lets the crew know that a ground radio operator wants to communicate with them. [International Virtual Aviation Organisation, 4/2/2006; Aviation Spectrum Resources, Inc., 9/14/2011, pp. 2-1, 4-1 pdf file] ) However, ARINC's attempts at contacting Flight 11 are unsuccessful. ARINC calls Houck back to let her know this. The ARINC employee says ARINC has "SELCAL'd" Flight 11 and sent ACARS messages to the plane, but without getting any response. The employee also says that ARINC called the FAA's Boston Center, which has been handling Flight 11, and asked if it could relay a message to Flight 11, but the Boston Center replied that it "couldn't at this time." After Houck says she would like ARINC to keep trying to contact Flight 11, the employee ends the call, telling her, "I'll advise the operators to keep on trying." Houck will later recall that by this time, she has received "no messages or other communications from Flight 11, and had received nothing from the crew to indicate any trouble on board." [American Airlines, 9/11/2001, pp. 26-27; Federal Bureau of Investigation, 9/11/2001, pp. 5-7] |
Colin Scoggins. [Source: John P. Meyer] | Colin Scoggins, the military liaison at the FAA's Boston Center, arrives at work an hour late and is informed of the hijacking of Flight 11. [Federal Aviation Administration, 9/20/2001; WAMU, 8/3/2006; Spencer, 2008, pp. 32-33] Scoggins is an experienced air traffic controller and specializes in airspace, procedures, and military operations. He is responsible for managing operating agreements between the Boston Center and other air traffic control facilities, and between Boston Center and the military. He is also responsible for generating the military schedules that keep FAA facilities synchronized with military airspace requirements, and has therefore developed personal relationships with most of the military units in his region. [Spencer, 2008, pp. 32-33] Arrives One Hour Late - In a 2006 radio interview, Scoggins will recall that he arrives at work one hour late, saying, "That morning I actually came in, took an hour early on the front of my shift, so I didn't get in until 8:30." [WAMU, 8/3/2006] But in a statement that will be provided to the 9/11 Commission, he says he arrives at the Boston Center slightly earlier, at "about 8:25 a.m." [Federal Aviation Administration, 9/20/2001] When he enters the building, a colleague tells him about the hijacking of Flight 11. [Spencer, 2008, pp. 33] |
Heads to Credit Union - Rather than going immediately to help deal with the hijacking, Scoggins heads to the credit union at the center. He will recall, "I wasn't in a rush because when hijacks do occur, sometimes too many people try to get involved, but instead they just get in the way." Mentions that Hijacked Plane Could Hit a Building - When he gets to the credit union, Scoggins decides he should go to the center's traffic management unit, to make sure that fighter jets are launched in response to the hijacking. As he will later recall, he says to an employee at the credit union that "if it really came to it," and fighter jets "had to stop the hijack from hitting a building or something, there wasn't much [the fighters] could do." [Federal Aviation Administration, 9/20/2001] Updated on Hijacking - Scoggins then heads to the center's operational floor, arriving there at about 8:35. [WAMU, 8/3/2006; Griffin, 2007, pp. 335] He goes to the traffic management unit and the desk of Daniel Bueno, who is the unit's supervisor. Bueno brings Scoggins up to date on the details of the hijacking. He tells him: "It sounds real. We heard a Mideastern or Arabic voice on radio. They've also turned off the transponder to prevent the hijack code from appearing." Bueno says the Boston Center controllers are still tracking the primary radar return for Flight 11, but they lack information on its altitude. According to author Lynn Spencer, it occurs to Scoggins that NORAD's Northeast Air Defense Sector (NEADS) might be able to provide altitude information for Flight 11, "because the FAA radar system filters out certain altitude information that NEADS gets." He will therefore phone NEADS as soon as he arrives at his station (see (8:35 a.m.) September 11, 2001). [Spencer, 2008, pp. 33] |