Newly posted audio files depict the horror of 9/11 unfolding in the sky as air traffic controllers struggled to follow the faint tracks of hijacked planes, fighter jets tried in vain to chase them down and a flight attendant made a desperate appeal for help.

THE flight attendant aboard American Airlines Flight 11 seemed calm and professional beyond reason as she reported a ghastly scenario during a 23-minute telephone call just before the plane slammed into one of the World Trade Center towers.

Two flight attendants on the doomed American Airlines plane that crashed into New York’s World Trade Centre on September 11 relayed vital details that helped the FBI identify the terrorists responsible.

American Airlines has released the names of some of the people who died on its flights in the terror attacks on New York and Washington.