The flight data recorder and cockpit voice recorder, known as the black boxes, may offer clues about what went wrong before the crash.

Air traffic controllers asked Flight 5342 to switch runways when coming in to land. Black box recordings from the jet and the military helicopter it collided with will help reveal whether this contributed to the accident.

Multiple figure skaters and coaches who took part in the U.S. Figure Skating Championships were reportedly aboard an airplane that crashed above Washington D.C.