Air crash investigations can take months, and federal investigators told reporters they would not speculate on the cause.

As the National Transportation Safety Board investigates the fatal midair collision that left 67 dead, details are emerging about mistakes and failures leading up to the crash.

The Army Black Hawk is said to have been flying higher than it should have been when it collided with a passenger jet, killing 67 people. And the air traffic controller on duty was doing a job usually ...

Emergency teams will continue efforts to retrieve the bodies of those who died when a passenger jet and helicopter collided.