
Final day of NTSB hearing on DC midair collision: investigators press for answers on what could have prevented crash
By Alexandra Skores, Aaron Cooper, CNN Washington, DC (CNN) — In more than 32 hours of testimony across three days the National Transportation Safety Board probed virtually every detail of what led up to the January 29 midair collision between a US Army Black Hawk helicopter and an American Airlines regional jet, operated by PSA
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