Air traffic controllers twice alerted the crew of a U.S. Army helicopter to the presence of an inbound American Airlines jet, ...
The National Transportation Safety Board says the helicopter must be recovered from the Potomac River so it can get more ...
Readings have been compared from the black box recovered from American Eagle flight 5342 and the air traffic control tower ...
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?
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