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Delta Air Lines Flight 1989
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Delta Air Lines Flight 1989 : ウィキペディア英語版
Delta Air Lines Flight 1989

On September 11, 2001, Delta Air Lines Flight 1989 was a regularly scheduled flight offering nonstop morning service from Logan International Airport in Boston to Los Angeles International Airport on a Boeing 767-300ER aircraft. This flight was one of several flights considered by the U.S. government as possibly hijacked. The flight had not been compromised, and soon landed safely in Cleveland, Ohio.
==Suspected hijacking==
The Boston Center air traffic controllers realized that both of the aircraft that had struck the World Trade Center were Boeing 767s departing Logan Airport for Los Angeles and that Delta 1989 fit the same profile as other hijacked flights: it had taken off from Logan International and was a 767 ER.〔"(The 9/11 Commission Report; Chapter 1.2 Improvising a Homeland Defense )"〕 When Delta 1989 failed to acknowledge Boston Center's communications, it was declared a suspected hijacking. Boston Center staff notified the FAA about their suspicions at 9:19 AM Eastern Daylight Time when the FAA’s New England regional office contacted the Herndon Command Center and asked Herndon to relay a request that Cleveland Center notify Delta 1989 to increase cockpit security. Herndon then ordered controllers to send a cockpit warning to Delta 1989.〔http://www.gpoaccess.gov/911/pdf/fullreport.pdf The 9/11 Commission Report; Chapter 1.1 "Inside the Four Flights"〕 Boston was tracking Delta 1989 and not receiving any radio contact from the aircraft. In fact, Delta 1989 was in Cleveland airspace and in contact with Cleveland Air Traffic Control Center.
The FAA had read Delta 1989 to be in Cleveland airspace and ordered Cleveland Center to watch for Delta 1989 as a suspected hijacking. A Cleveland controller thought he heard "Get out of here" and "We have a bomb on board" coming from Delta 1989. The Delta pilot denied any cockpit intrusion and stated that everyone on board was fine. It was later confirmed that the transmission had come from United Airlines Flight 93 which was in the same vicinity as Delta 1989, and would later crash into a field in Shanksville, Pennsylvania, after the passengers and crew tried to fight off the hijackers.〔 The NORAD Northeast Air Defense Sector (NEADS) became aware of Delta 1989 right after the crash of American Airlines Flight 77 into the Pentagon at 9:37AM when Boston Center called NEADS at 9:41 AM EDT and told NEADS of the suspicions regarding Delta 1989. At 9:42 AM EDT, the FAA ordered all aircraft in flight to land at the nearest airport. NEADS dispatched fighter aircraft from Ohio and Michigan to intercept the flight, though Delta 1989 never turned off its transponder and NEADS never lost radar contact with the aircraft. NEADS, the FAA Herndon Command Center, and Cleveland Center tracked Delta 1989 until its eventual landing.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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