China Plane Crash Update: Pilots Didn't Answer Calls; Fast Dive.

(Bloomberg) -- Pilots of a doomed China Eastern Airlines Corp. flight failed to respond to calls from air-traffic controllers after tipping into a deadly nosedive, authorities said. Jet Dived Near Speed of Sound (5:50 a.m. HK) The jet 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. [Extracted from the article]