What caused DC plane crash? Some transmissions not received by helicopter crew, investigators say
Officials with the National Transportation Safety Board gave an update on their investigation Friday into the D.C. plane crash last month.
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.