reliable engine
0.15 shutoffs in 100,000 flight hours

https://en.wikipedia.org/wiki/Pratt_%26_Whitney_Canada_PT6

Pratt & Whitney Canada PT6

[[https://www.victor-aviation.com/pdf/VictorAviationMayPIPERS09Story.pdf|Cryogenic hardening and reliability]]

[[https://en.wikipedia.org/wiki/CFM_International_LEAP|CFM LEAP reliable engine]]