MySuncoast.com13m
NTSB: helicopter crew may not have heard key air traffic control transmission before DCA mid-air collision
National Transportation Safety Board officials said Friday that a key transmission from Reagan National Airport’s air traffic ...
Iowa Public Radio58m
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 mid-air collision with an American Airlines jet. All 67 people aboard died.