who was the pilot that crashed into the twin towers
Marwan al-Shehhi
American Airlines Flight 11
 Marwan al-Shehhi, the hijacker pilot of United Airlines Flight 175, made a call from a pay phone in Logan Airport to Atta's cell phone.
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American Airlines Flight 11 [SEP] Boarding
Wail al-Shehri and Suqami each checked one bag; Waleed al-Shehri did not check any bags. CAPPS selected all three for a detailed luggage check. As the CAPPS' screening was only for luggage, the three hijackers did not undergo any extra scrutiny at the passenger security checkpoint. By 07:40, all five hijackers were aboard the flight, scheduled to depart at 07:45. Mohamed Atta sat in business class seat 8D with Abdulaziz al-Omari in 8G and Suqami in 10B. Waleed al-Shehri and Wail al-Shehri sat in first class seats 2B and 2A. At 07:46, one minute behind schedule, the aircraft received clearance to push back from Gate B32, and was cleared to taxi to the runway at 07:50.