Preliminary data from the deadliest U.S. aviation accident in nearly 25 years showed conflicting readings about the altitudes of an airliner and Army helicopter when they collided near Washington.

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 ...

A local retired diver explained the challenges rescue divers face as they pull wreckage from the Potomac after an American ...

While nearly 43 years old, the Learjet that crashed in a fiery, rush-hour explosion Friday night in Northeast Philadelphia is ...