Investigators are still unable to answer how high the helicopter was flying.

The Black Hawk that collided with an American Airlines jet in January may not have had accurate altitude readings, ...

Investigators believe the Army helicopter crew involved in the midair collision near Washington, DC may have had inaccurate altitude readings and missed key air traffic control directions.

The National Transportation Safety Board provided an update on Friday into the investigation of the deadly Army Black Hawk helicopter and American Airlines flight collision.

The U.S. Army Black Hawk crew possibly didn't know there was an impending collision with a American Airlines jet in ...

Voice recordings from the Black Hawk helicopter involved in the crash with a commuter plan in Washington, DC, on January 29 ...

The NTSB says pilots of the airplane that crashed into a military helicopter in Washington, DC tried to quickly climb a second before the crash. The American Airlines flight crashed into a ...

The portion of the transmission that stated 'pass behind', may not have been received by the Black Hawk crew,” NTSB Chair Jennifer Homendy said.

On Jan. 29, an American Airlines passenger jet and an Army helicopter collided as the plane prepared to land at Washington ...

The Black Hawk was conducting a check flight, and the pilot was being tested on night vision goggle uses and instrument flying.

The NTSB gave an update on its investigation into the Potomac River crash between an American Airlines jet and an Army ...