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 ...
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NTSB says instructions for chopper may not have been heard before midair D.C. plane crash
Members of the National Transportation Safety Board gave an update Friday on the investigation into last month's midair ...
US probing 'bad data' possibly used by Black Hawk crew before deadly crash, official says
The National Transportation Safety Board is examining "bad data" the crew of an Army Black Hawk helicopter may have relied ...
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 ...