Just to clarify, my comments on pilot error and PT6 abuse were not intended as a comment on the standard of operations in Maun, but rather on the general causes of PT6 problems.
According to P&W statistics an average pilot would have to fly a PT6 for over 300 years (more than 10 working lifetimes) to experience a single failure.
I have met misguided pilots who refuse to use the separator during takeoff "because I need all the power I can get". These guys should be taken out and shot, the damage that they cause can kill innocent people weeks or even months later when the bearings finally let go.