According to a report on the BBC website: Officials on the ground in the control room heard these words clearly, but did not understand what they meant, there was no time.
The hijacked American Airlines plane crashed when it crashed into the North Tower of the World Trade Center.
United Airlines flight 175 was bound for Los Angeles from Boston's Logan Airport.
five people hijacked the plane; Two Emiratis, and three Saudis: Marwan Al-Shehhi, Fayez bin Hamad, Muhannad Al-Shehri, and the two Saudi brothers Ahmed and Hamza Al-Ghamdi.
The computer system that checks the identities of passengers before boarding the plane did not reveal any problem regarding the identity of the hijackers, as happened with the hijacker of the first plane, Muhammad Atta; So they were able to get on the plane with ease.
The five kidnappers had only sticks and small knives, which were their only weapons; So they were able to pass the airport security check easily.
Flight 175 had a departure time of 8 a.m., but it was delayed a little and took off from Logan Airport at 8:14, with 51 passengers and nine crew members on board.
When the plane reached 31,000 feet above the ground, the flight attendants began offering hospitality as usual.
Communication between two planes
At 8:42, the pilots called the control room on the ground, saying that they had heard suspicious communications from another plane; It may be from American Airlines Flight 11, which was actually hijacked by Mohamed Atta.
The control room did not receive any information from the pilots of Flight 175 after 8:42, at which point the hijackers began intimidating the passengers and threatening them with knives.
At 8:47, control room officials realized that there might be suspicious activity on board; The plane deviated from the specified path and did not comply with the orders given to it by the authorities.
*Telephone calls from passengers
At 8.52 a.m. Lee Hanson, of Connecticut, received a phone call from his son Peter, who was on board the hijacked Flight 175, and Peter said to his father on that call, "I think they've taken over the cockpit. Some of them are up front, too. He immediately called United Airlines and told them what was happening on Flight 175 to Los Angeles. Lee Hanson immediately called the police and told them what his son had told him.
* The hijackers are driving the plane
At 8:52 a United Airlines crew member called the airline's headquarters in San Francisco, telling it that the two pilots had been killed, and that the plane had been hijacked. At the time, the authorities realized that the hijackers were the ones driving the plane.
At 8.59, another passenger, Brian Sweeney, tried to call his wife, but she was not there. He called his mother and told her that the plane had been hijacked, and that all the passengers were wondering if they could storm the cockpit and free the plane from the terrorists.
*Connection at the moment of collision with the Trade Tower
When Peter called his father the second time, he was even more nervous. "They have knives. They say they have a bomb. I think they're planning to crash into a building somewhere. Dad, don't worry if something like that happens, it all ends very quickly." Peter did not complete the call and the connection was lost.
Before the call was cut off, Peter's father heard a woman screaming, and television footage showed a second plane crashing into the other building of the World Trade Center.
Several calls were heard from the plane's passengers with people on the ground, confirming that the hijackers were mostly armed with knives and sharp tools.
Although they threatened to possess the bomb, investigations revealed that this was not true; The September 11 investigation report stated that no traces of explosive materials were found at the site of the attack.
The investigations said: Their threats were unreal and they were not in possession of a bomb.
In contrast to American Airlines Flight 11, United Airlines Flight 175 was diverted to New York City. The aircraft's transponders were not turned off; This made it easier for radars to track them.
The plane that flew over Staten Island in New York Bay, headed towards the Empire State Building, and at the last moment veered towards the World Trade Center building, the plane was deliberately crashing into the South Tower, avoiding the North Tower.
When the plane hit the South Tower at 9:39 a.m., it was carrying a total of 38,000 liters of fuel, 5 hijackers, 2 pilots, 9 crew members, 51 passengers, an 80-year-old grandmother and a two-and-a-half-year-old child.
The cameras were broadcasting live, the flying parts of the plane that had penetrated the south tower were falling in front of people's eyes.
About 50 minutes later, the building collapsed to the ground and about 2,600 people were killed in the two attacks, more than 300 of whom were rescue workers. While the rescue operation was underway, there were fears among the people of the possibility of another attack after the terrorists succeeded in carrying out their scheme and the intelligence services failed to discover it.
Their plan was to deceive the United States, which had fought the war in many countries, by taking the fight to its own soil.