Helicopter crew in collision with plane may not have heard key instruction from tower, NTSB says
Investigators say the crew of the helicopter that collided midair with an American Airlines jet near Washington D.C.’s Ronald ...
NTSB looking at possible bad data, missed tower message in Army chopper's collision with jet
The U.S. Army Black Hawk crew possibly didn't know there was an impending collision with a American Airlines jet in ...