WASHINGTON - Federal safety officials say an air traffic controller should have warned the pilot of a small plane that other aircraft were in his path before the plane collided with a helicopter over the Hudson River.
The accident early this month near New York City killed nine people, including five Italian tourists.
The National Transportation Safety Board said in a letter released Thursday that if the controller at Teterboro Airport in New Jersey had been following procedures he would have warned the pilot of the other traffic in his path.
The controller was talking on the phone to a friend at the time of the crash.


