Investigators found a new lead amid their probe into the cause of the deadliest plane crash in nearly 25 years in Washington DC.

The first thing to know about an airliner’s “black box” is that it’s actually ... from the aircraft's speed and altitude to its pitch and position of each flap; the second is a voice ...

The American Airlines flight involved in the deadly collision with a Black Hawk helicopter over Washington, DC, seemed to increase its pitch just before the impact, preliminary data from a voice data ...