Calm down
I have read the preliminary report and will not comment in too much detail, but suffice to say that at 1717 the aircrafts overspeed warning sounded. Very shortly afterwards BOTH props simultaneously oversped and exceeded their maximum rpm by in excess of 60%.
Witnesses on the ground reported hearing a loud 'bang' as this occurred. The flight crew shut down both engines.
Preliminary CVR transcript, sound spectrum plot, FDR plots and data listings have been supplied to the investigative team.
Ongoing investigation activities are continuing in the area of engine and prop assemblies, recorded information and maintenance documentation and procedures.
Hopefully this will at least steady some of the emotion on this thread before it gets closed.