I have no clue about this. Got email through my colleagues so thought to share in Sajha. If you know better be positive and share your comments. No one is trying to bullshit you. stop bullshitting about the flight numbers okey.. and find a better way ... fyi, these were four coast to coast flight commandeered that day. United Airlines Flight 175 UA175 American Airlines Flight 11 AA11 United Airlines Flight 93 UA93 American Airlines Flight 77 AA77 one more thing usually you have 2/3 letters for the airlines and 2/3/4 for the flight number