Assume

Assume – yep, we all know what those letters stand for. I can’t speak for “u” but assuming has made an ass out of “me” more than once. There’s a fair amount of assuming attached to any endeavor, including engine data analysis....

By The Book?

Must manufacturer’s maintenance guidance be followed? Have you ever had your mechanic tell you something like this: “It has been six years since your propeller was last overhauled, so we’re going to have to overhaul it this year as required by Hartzell.” “Your...

Flux Capacitor

There’s a running gag in my family when a mechanical device isn’t performing properly. It takes three people. After the owner of the device has described the symptoms in detail to the other two people, they offer suggestions about what’s causing the...

Back In The Game

The first flight after maintenance is special. My client wanted to buy a Bonanza A36, and narrowed his search to two promising candidates. One had recently suffered a “forgot to remove the tow bar” prop strike, necessitating an engine teardown inspection and prop...