What is a black box on a plane? What to know after AA Flight 5342 crash with helicopter
What is a black box, what can it tell us, and have the data recorders been found from Flight 5342 and the Army's Blackhawk?
Flight-Data and Voice Recorders Recovered From American Airlines Plane
The National Transportation Safety Board has recovered the cockpit voice recorder and the flight-data recorder from the American Airlines jet involved in the deadly collision with a military ...