U.S. Army Black Hawk helicopter collided with American Eagle Flight 5342 on final approach to Ronald Reagan Washington National Airport over the Potomac.

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

The flight traffic data NTSB has obtained confirms the helicopter was flying at 300 feet, the air traffic control display showed. That is 100 feet more than it should be flying in the