Investigators find black boxes after deadly Washington plane crash, continue search for answers
U.S. authorities said on Thursday it was not yet clear why a regional jet and a U.S. Army helicopter collided at a Washington airport, killing 67 people in the deadliest U.S. air disaster in more than 20 years.
Business Insider reviewed official briefings, flight data, and air traffic control audio tapes to piece together what happened before tragedy struck.
Flight attendant Danasia Elder was among the victims of the Jan. 29th crash near Ronald Reagan Washington National Airport.
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