What stood out to Rainen was that the military’s Black Hawk helicopter was at the altitude of American Airlines flight 5342 ...

The National Transportation Safety Board gave an update on its investigation into the deadly midair collision between an American Airlines plane and a Black Hawk helicopter.

He shared general information about how pilots prevent collisions, land planes and fly at night. Rainen said the best way for pilots to avoid collision is to be above or below another aircraft.

The U.S. Army helicopter that collided with an passenger jet near Washington, D.C., had an advanced surveillance system turned off.