At 08:55, a supervisor at the New York Air Traffic Control center notified the center's operations manager of the Flight 175 hijacking, and David Bottiglia, who was tracking Flight 175, noted, "we might have a hijack over here, two of them."
By 08:58, the plane was heading toward New York and descended from an altitude of 28,500 feet over New Jersey. From the time, at approximately 08:58, when Shehhi completed the final turn toward New York City to the moment of impact, the plane went into a sustained power dive, descending more than 24,000 feet in 5 minutes 4 seconds, for an average rate of over 5,000 feet per minute.
New York Center air traffic controller Dave Bottiglia reported he and his colleagues "were counting down the altitudes, and they were descending, right at the end, at 10,000 feet per minute. That is absolutely unheard of for a commercial jet."
CallsFlight attendant Robert Fangman, as well as two passengers (Peter Hanson and Brian David Sweeney) made phone calls from United Airlines Flight 175, using GTE
airphones, from the rear of the aircraft. Airphone records also indicate that
Garnet Bailey made four phone call attempts, trying to reach his wife.
Flight attendant Robert Fangman called a United Airlines office in San Francisco at 08:52, and spoke with Marc Policastro. Fangman reported the hijacking, and said that the hijackers were likely flying the plane. He also said that both pilots were dead, and that a flight attendant was stabbed.
[10] After a minute and 15 seconds, Fangman's call was disconnected. Policastro subsequently made attempts to contact the aircraft's cockpit using the
Aircraft Communication Addressing and Reporting System (ACARS) message system.
Brian David Sweeney tried calling his wife, Julie, at 08:58, but ended up leaving a message, telling her that the plane had been hijacked. He then called his parents at 9:00 a.m., and spoke with his mother, Louise. Sweeney told his mother about the hijacking, and mentioned that passengers were considering storming the cockpit and taking control of the aircraft, as the passengers aboard
United Airlines Flight 93, which had not yet been hijacked, would.
At 08:52, Peter Hanson called his father, Lee Hanson, in
Easton, Connecticut, telling him of the hijacking. The family was originally seated in Row 19, in seats C, D, and E; however, Peter placed the call to his father from seat 30E. Hanson was traveling with his wife, Sue, and 2½-year-old daughter, Christine, who had never flown on a plane before. Speaking softly, Hanson said that the hijackers had commandeered the cockpit, that a flight attendant had been stabbed, and possibly someone else in the front of the aircraft had been killed. He also said that the plane was flying erratically. Hanson asked his father to contact United Airlines, but Lee could not get through and instead called the police.
Peter Hanson made a second phone call to his father at 09:00:
“It's getting bad, Dad. A stewardess was stabbed. They seem to have knives and
Mace. They said they have a bomb. It's getting very bad on the plane. The plane is making jerky movements. I don't think the pilot is flying the plane. I think we are going down. I think they intend to go to Chicago or someplace and fly into a building. Don't worry, Dad. If it happens, it'll be very fast....Oh my God... oh my God, oh my God."”As the call abruptly ended, Hanson's father heard a woman screaming
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DEPARTMENT OF THE AIR FORCE
84TH RADAR EVALUATION SQUADRON (ACC)
HILL AIR FORCE BASE, UTAH
3.2 WTC Aircraft Two (UA 175). The Riverhead NY ARSR-4 provided full radar coverage for the UA Boeing 757 aircraft that impacted with the WTC at 09:02 ET. Radar data begins shortly after takeoff at 08:16 ET. Radar data shows UA 175 climbing to flight altitude west of Boston Logan International Airport. During this flight, the aircraft transponder mode 3A code changed twice. The initial mode 3A code of UA 175 was 1470. At 08:46 ET, the mode 3A code changed to 3020 and at 08:47 ET to 3321.
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