Drone Operator Caused U.S. Army Helicopter Collision

National Transportation Safety Board said that a September collision between a small civilian drone and a U.S.

Army helicopter was caused by the drone's operator.The board said the operator failed to see the helicopter, because he was intentionally flying the drone out of visual range.

The incident near Staten Island, New York occurred as concerns mount over the rising number of unmanned aircraft in U.S. airspace.

In a report the NTSB said that drones are barred from being flown out of visual range..