Originally Posted by krudawg

The way Cal Air/Ameriflight operated their Navajo's and Chieftains really cut down on pre-mature engine problems. I worked there from 79 to 86. They even had approval to push the TBO's from 1800 tbo to I believe 2200 (2400?) TBO. Most guys at cruise just throttled back and leanded to 18 gph per side on the Chieftain unless Gary was being a jerk that particular week then most of us ran it full-rich :-). I spent 7 years there at AMF and learned more about flying in those 7 years than I've learned the the last 30 flying the big iron for the Majors.