Two investigators from the National Transportation Safety Board were already at work Friday to look into the fire that appeared after American Airlines flight 1006 arrived in Denver the evening before.

Dozens of passengers were forced to stand on the wing of an American Airlines plane at Denver International Airport as they evacuated the aircraft after one of its engines caught fire Thursday evening,

D ENVER — A fire on an American Airlines plane after it diverted mid-flight and landed at Denver International Airport sent passengers fleeing onto a wing in a fraught evacuation amid billowing clouds of smoke. Airport officials said 12 people were taken to hospitals with minor injuries.