MTBF = 25/45/25. I see your point MT. But don't lose faith because
Moreover, P&W’s ground-based testing of the production configuration shows that version should meet current reliability targets once it enters flight operations later this year, Croswell says.
So it will be OK. A bit like a car dealer telling you, "It's a bit shabby now, but once you buy it, it will suddenly be fine."
I do have a question for anyone in the know. What is the difference in the final result between letting the blades do the trenching and pre-trenching? Why should that alter the performance of the engine once the process is complete?
Let me be clear, in case I get the all-too-common response from the back of a tall equine, I am not asking about the reasons for pre-trenching, nor am I questioning the need for it. I am wondering if allowing the engine to do it itself results in a better, more accurate fit or to understand if there are other issues.