Experts say the deadly incident poses grave questions about how a collision was able to happen over the US capital.
Wednesday's crash involving an American Airlines flight and Black Hawk helicopter marked the first commercial crash on U.S. soil in more than 15 years.
"Hero" pilot Peter Burkill spoke for the first time today about the dramatic moment his plane crashed at Heathrow. Addressing a packed press conference, the captain and his co-pilot John Coward ...