Originally Posted by
Requestcode
The reports iv heard is it was an un commanded increase in torque. The pilot then returned to land, shut the engine down on approach to land and subsequently overshot/landed long. That would explain the 185kt ground speed.
There was recently a similar event in Canada on January 10, I think. A DHC-3T had an uncommanded increase in torque, exceeded Vmo, then ended up short of the runway.