Present case excluded at the moment, but has there ever been a case of a SE turboprop suffereing engine failure and killing everyone? I seem to remember a Piper turbine failed in the USA, but as they were at FL300 they glided for ages and made a perfectly good landing on an airport.
Englishall
Rather than engine failure only maybe the better question would be have there been fatalities due to single engine?
What i am getting at here is that there have been a number of documented TBM700 Torque induced spin fatalities as for actual engine failure I have not checked
Pace