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 ...
Investigators cite possible miscommunication in D.C. midair collision which killed Massachusetts residents
The portion of the transmission that stated 'pass behind', may not have been received by the Black Hawk crew,” NTSB Chair Jennifer Homendy said.