Sunday, September 11, 14 years ago, two Boeing 767 operated by American Airlines and United Airlines, each flight number of American 11 and United 175, crashed into the twin towers of the World Trade Center in downtown New York , USA, by the hijackers.
The New York Times exposing a sound recording released by investigators, describing the seconds by world events is now called the events of 11 September or nine eleven (9/11).
Do not answer the call ATC
From some of the voice recording, there is a recording of radio conversations between air control officer and air traffic controller (ATC) Boston and 11 American aircraft that disappeared from radar.
At 08:34 am, the control tower Boston ordered American 11 is flying the route Boston-Los Angeles to climb to an altitude of 35,000 feet.
"American 11, climb maintains the level three five zero ..."
However, no response from the American 11. ATC seeks to continue to have a radio, but the American 11 did not respond.
Important information from the phone stewardess
At 08:19, about 30 minutes before the hijacked plane crashed, the American flight attendant Betty Ong named 11 airline reservation call center with Airfone available on the plane.
Betty spoke with the reservation agent Nydia Gonzales said that the pilot and co-pilot in the cockpit could not be reached, there are two crew members were stabbed in business class, one in critical condition, and one was not lifeless.
Nydia then pass on information received to the control center of the crisis of American Airlines.
American Airlines attendant crisis then perform the tracking and profiling of the hijacked plane. Known, the aircraft turns radar transponder was turned off by the pirates.
With transponder dead, officials on the ground cannot see the data altitude and speed of the aircraft, but they realized that the plane was lowered height.
ist Betty Ong, a flight attendant American 11.
The following is a conversation with a flight attendant Betty Ong crisis management personnel carrier American Airlines:
"I stewardess number 3 on the back, the cockpit is not answering, someone had been stabbed in business class, it looks like we are being hijacked," said Betty.
"You are in the flight where," asked the officer of American Airlines.
Betty replied, "Flight 11."
"Can you explain who was in business class?" American Airlines attendant asked back.
"I sat in the back, there is a new moment of the business class. (Betty asked her to), no one knows who stabbed who?"
"I do not know, but Karen and Bobby (purser and stewards) had been stabbed," said another voice in the back.
Later, Betty told the clerk American Airlines, "(cabin crew) number 1, our purser punctured, do not know who is piercing, we do not dare to come. The crew cabin number 5 was also stabbed. We could not get into the cockpit."
"They do not maintain a sterile cockpit?"
"The pirates are in there. They seem to block the door. No one can get in or call the cockpit," said Betty again.
Later known from audio recordings circulating on YouTube that last sentence was said by Betty Ong over the phone before the plane crashed is, "shuttle back flying erratically."
No more sound recordings of Betty. It seems they are not aware that the plane in which they were being directed to one of the towers of the WTC buildings.
Nydia, the reservations clerk who mediates Betty with the American crisis center Arilines, no longer hear the voice of Betty.
"Betty, talk to me ... Betty, are you still there? Okay we wait, the channel is still open ... I think we lost him (interrupted communication)," said Nydia.
However, Betty could provide important information that reveals the identity of the hijackers. When asked by Nydia, who was in the cockpit at the time, Betty gave information that they are passengers in seats 2A and 2B.
Sound recordings pirates
At 8:24 a.m., the hijackers of American Airlines 11 was then known of the manifest list named Mohammad Atta inadvertently make contact with ATC. However, it seems he was not aware of it.
From what it sounds, Atta seemed to want to communicate with the passengers. Yet somehow, he pressed the wrong button or something, it makes the sound is transmitted to a radio channel ATC.
"We mastered the plane, remain calm, and we will be fine, we will go back to the airport," said Atta.
Boston ATC officer who heard the transmission is asked, "American 11, you just call?" However, when the ATC is not aware that the talk is the hijackers.
Then Atta voice heard again. "Do not anyone move, all will be fine. If anybody moves, you will hurt yourself and this aircraft. Sit still."
Calculated exercises
FAA officers are aware that it is hijacking was immediately contacted the US defense command, NORAD, reported that the hijacking had occurred on American 11.
FAA asked NORAD to take off (scramble) F-16 to chase the American 11 was missing from the radar. However, without a transponder is detected, NORAD difficulty tracking the whereabouts of American 11.
American 11 is only detected by primary radar, which her wink only appears a few moments, without information altitude, speed, and so on.
Misunderstanding had occurred when officers in NORAD obtain information about the hijacking. He thinks this is an exercise.
"Is this really happening or just practicing?" "No, this is not exercise, not a test."
American 11 crashed into the north tower
Amid the chaos of the chain of communication and command, at 08:47 local time, a fireball visible from one of the towers of the WTC buildings.
At that time, simultaneously, ATC Boston and New York both lose track of American 11 on their primary radar.
"Boston lost contact, the frequency we show no threat of pirates."
"Confirmation, New York also lost contact, and we got the ELT signal in the area."
ELT, or emergency locator transmitter is transmitting a signal from the plane's black boxes, which transmit location information when experiencing tremendous collision.
ATC New York after receiving a report from ATC at Kennedy Airport that they saw a ball of fire in the WTC. "You serious? That's an area we lost track of the plane," said ATC New York.
United 175 crashed into the south tower
At 09:01, the new FAA received a report that there was a second plane was missing, namely United 175 Boeing 767 operated by United Airlines, the Boston-Los Angeles route.
FAA officials requested military engagement immediately dispatched fighter jets to locate and prevent the missing plane.
But at 09:02 pm, officer’s terminal control tower radar approach control (tracon) in New York to see firsthand the object plane that crashed into the south tower of the WTC.
"Hey, look out the window; look at an altitude of 4,000 feet east toward the airport."
"Yes, I see, he came down quickly ... 4,500 feet now. He was down to 800 feet so quickly."
"Anyone know the type of plane?"
Then there was a voice in the back that says there is one more plane that crashed into the building.
"One more crashing tight, another plane crashed into the World Trade Center," said the voice.
At 9:03 a.m. the morning, United flight 175 crashed into the south tower of the WTC. It was then that millions of New Yorkers who watched the live broadcast of the WTC buildings were hit by a plane on television to realize that they are being attacked.
An hour later, two unknown aircraft missing. They are B757 American Airlines Flight 77 and United Airlines B757 flight number 93.
Later known American 77 crashed at the headquarters of the US armed forces, the Pentagon, at 09:38 o'clock in the morning.
Meanwhile, United 93, thanks to the heroic resistance of the passengers in it, failed towards the intended target pirates. The plane crashed in a field in Shanksville Pennsylvania, about 240 miles northwest Washington.
Allegations that arise during this, the target of the hijackers in the United 93 flight are the White House.
ist Map September 11, 2001
All flights in the US was forced to land
After four tragic events that led to the hijacking, the FAA issued an order for clicking grounded all aircraft in the airspace of the United States.
The plane that was heading to the United States was forced to divert to the nearest airport.
The United States now commemorate the tragedy of 9/11 to build a monument at ground zero former WTC buildings, and build a new tower named One World Trade Center.
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