The crew of the Army Black Hawk helicopter that collided with an American Airlines jet near Ronald Reagan Washington National Airport last month may not have heard a key air traffic control instruction before the crash, the National Transportation Safety Board (NTSB) said on Feb. 14.
The helicopter crew did not hear air traffic control’s (ATC) communication to “pass behind” the CRJ-700 jet moments before the collision, according to the aircraft’s cockpit voice recorder data.