NTSB, Greg Biffle and Bombardier Challenger 600 crash
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American Airlines Flight 5342 from Wichita, Kansas, was attempting to land when the plane and a Black Hawk helicopter collided.
In an update on Tuesday, officials say that transcriptions for both aircrafts cockpit voice recordings are ongoing.
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NTSB releases investigation on plane crash that killed Greg Biffle | Here are their findings
The National Transportation Safety Board has released its preliminary investigation report of the Statesville plane crash that killed NASCAR driver Greg Biffle and six others.
An update on last fall's deadly UPS jet crash has raised questions over past warnings and renewed focus on Boeing's rocky record of safety in recent years.