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What is known about the deadly January air crash between a passenger jet and US Army helicopter
On Jan. 29, an American Airlines passenger jet and an Army helicopter collided as the plane prepared to land at Washington ...
Jefferson Public Radio26m
Altimeter in Black Hawk helicopter may have malfunctioned before DCA mid-air collision
The National Transportation Safety Board says altimeter in the Black Hawk helicopter may have malfunctioned before the DCA ...