Helicopter crew may not have heard air-traffic instruction before collision

The crew of the Army helicopter that collided in midair with an American Airlines jet near Washington, DC's Ronald Reagan National Airport may have had inaccurate altitude readings in the moments before the crash, and also may not have heard key instructions from air traffic controllers to move behind the plane, investigators said on Friday.

- Associated Press

WASHINGTON:

National Transportation Safety Board Chairwoman Jennifer Homendy told reporters that the recording from the Black Hawk helicopter cockpit suggested an incomplete radio transmission may have left the crew without understanding how it should shift position just before the January 29 crash, in which all 67 aboard the two aircraft were killed.