Originally Posted by MrMachFivepointfive
The mean time between failures for the PT-6 is 346,000 hours.
Great statistic, but it excludes failures of external components like fuel pumps and oil lines, both of which you need for the engine to keep running. It's great for setting standards and comparing engines, but a discussion of single engine IFR should include total engine failures for
any cause, which isn't even tracked.