When to Overhaul

How do you decide when it’s time to overhaul your engine? If not at TBO, then when? Regular readers of this column know that I’m not a big fan of the idea of overhauling engines at TBO. I consider engine TBO to be a thoroughly discredited concept that has cost...

Flight Test Profiles

The best way to diagnose an engine problem is usually in the air. “My engine started running rough about halfway home yesterday,” my client reported, “so I dropped it off at the service center. Could you please work with my mechanic to troubleshoot this problem?”...