Investigators say the crew of the helicopter that collided midair with an American Airlines jet might not have heard key air traffic controller instructions.

The Blackhawk helicopter that crashed into the American Airlines flight preparing to land at Reagan National Airport on Jan.

On Jan. 29, an American Airlines passenger jet and an Army helicopter collided as the plane prepared to land at Washington D.C.’s Ronald Reagan National Airport.

The Army helicopter appeared to be experiencing other issues with its communications and technology, according to safety ...

The Black Hawk pilots who collided with an American Airlines plane last month may not have heard vital information given by ...