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 might not have heard key air ...
Black Hawk helicopter’s altimeter may have been inaccurate, pilots may have missed some calls from control tower
Voice recordings from the Black Hawk helicopter involved in the crash with a commuter plan in Washington, DC, on January 29 ...