A preliminary analysis of the flight data and voice recorder on board a Black Hawk helicopter leading up to the collision ...
While there was no immediate word on any casualties, all takeoffs and landings from the airport near Washington were halted ... audio from the air traffic control tower around the time of the ...
As investigators zero in on the final seconds before a regional American Airlines passenger jet and a Black Hawk military helicopter collided over Washington ... control tower was "not normal ...
The NTSB has found discrepancies in the altitude reported by the Black Hawk crew and are investigating potential issues with ...