At this point (July 15th) it is still not known. The black box data hasn't been released, even though it has been found.
There were four planes. The names:United Airlines flight 11, United Airlines flight 93, American Airlines flight 175, and American Airlines flight 77.
American Airlines Flight 11United Airlines Flight 175.American Airlines Flight 77.United Airlines Flight 93
American Airlines flight 191. Crashed on takeoff killing all 271 people on board and 2 on the ground.
American airlines flight 11united airlines flight 175American airlines flight 77united airlines flight 93
American Airlines Flight 11 N334AAUnited Airlines Flight 175 N612UAAmerican Airlines Flight 77 N644AAUnited Airlines Flight 93 N591UA
Flight West Airlines ended in 2001.
Flight West Airlines was created in 1987-05.
united airlines flight 175(north tower) united airlines flight 11(south tower) american airlines flight 77(pentagon) united airlines flight 93(pennsylvania)
1.American Airlines Flight 11 2.United Airlines Flight 175 3.American Airlines Flight 77 4.United Airlines Flight 93
They were American Airlines Flight 11 and United Airlines Flight 175
United Airlines Flight 175 and American Airlines Flight 11.American Airlines Flight 11 crashed into the World Trade Center's North Tower, followed by United Airlines Flight 175 which hit the South Tower.Two planes crashed into the World Trade center September 11 2001, American Airlines flight 11 (hit north tower) and United Airlines flight 175 (hit south tower).The plane that hit the Pentagon was American Airlines flight 77, and another plane (United Airlines flight 93) crashed in Pennsylvania.
MoScow to Armenia yerevan