Intervals

When are manufacturer-specified inspection, overhaul and replacement intervals mandatory for a Part 91 operator? “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 magnetos...

Warranty Schmarranty!

You bought a $40,000 engine, and it turns out to be a lemon. That’s okay, you’re covered under warranty, right? Hmmm… On a breathtakingly beautiful spring day in April 2011, one of my clients landed his 1980 Cessna T210 at its home base—a high-altitude airport (5,000...

Owner-Produced Parts

If your certificated aircraft needs a replacement part that’s ridiculously expensive or downright unobtainable, the FAA will allow you to produce one yourself.  The 1960s and 1970s were the biggest years for production of piston GA airplanes. By the peak production...

About Batteries

Sensitive and fragile compared to their automotive brethren, aircraft batteries need TLC if you don’t want to be left stranded. Aircraft batteries are the Rodney Dangerfields of general aviation. They get no respect. We let them sit unflown for weeks at a time,...

Making Metal?

How to ensure that nothing is coming apart inside your crankcase.  I’d been working with a Bonanza owner in Memphis for several weeks helping him chase down a problem with his Lycoming engine. Yes, Lycoming—the aircraft was an A36 with a Machen conversion to a...

The Waddington Effect

Contrary to popular belief, more maintenance isn’t necessarily better. Often it’s worse—a lesson that was learned during WWII. I’ve written at length in prior issues of EAA Sport Aviation on the subject of Reliability-Centered Maintenance (RCM), the scientific and...