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China Jet’s Dive Took It Near Speed of Sound Before Crash

  • Boeing 737-800 plunge exceeded 640 miles per hour on descent
  • High impact force of crash could complicate the investigation
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WATCH: One of the two black boxes from the Chinese jetliner that slammed into a hillside has been. Stephen Engle reports.Source: Bloomberg
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The China Eastern Airlines Corp. jet that crashed Monday was traveling at close to the speed of sound in the moments before it slammed into a hillside, according to a Bloomberg News review of flight-track data. 

Such an impact may complicate the task for investigators because it can obliterate evidence and damage a plane’s data and voice recorders that are designed to withstand most crashes. The cockpit voice recorder was located Wednesday, officials in China said.