First board the plane as an ordinary passenger;

The hijacking used weapons such as art knives, but no guns and ammunition. At that time, the security inspection in the United States was relatively loose, and smaller knives could be hidden on the plane;

The terrorists hijacked the stewardess with a knife, entered the cockpit and expelled the pilot to take over the control of the plane. Before 9 1 1, the common practice in the aviation industry was to avoid casualties and try to meet the requirements of hijackers, so terrorists successfully took over the control of the aircraft.

note:

Of all the 19 hijackers, 7 were originally pilots, and others also attended flight schools in various places. 13 people arrived in the United States from April 23rd to June 29th, 2006. Upon arrival, they were scattered all over the United States, generally living in remote suburbs, and all changed their English names. In the next few months, they were mainly active in eight States in the United States.

These hijackers paid a high price to get a driver's license. They rented an apartment, opened a bank account and joined a health club. They buy air tickets online and usually pay in cash wherever they go.

On 2001September 1 1, 19, terrorists hijacked four American civil airliners and launched terrorist attacks on many landmark buildings in the United States, creating the "9. 1 1" incident that shocked the world. In new york, at 8: 46 a.m. local time (8: 46 p.m. Beijing time), terrorists hijacked American Airlines flight 1 1 and crashed into the north building of the World Trade Center, with a height of 1 10. Nearly 3000 people were killed, most of them civilians. Among them, 246 crew members and passengers on four passenger planes were all killed.