[Dantilla]

I'm fortunate to have a great avionics shop at my home airport.

I am thinking, however, of selling my airplane (which is very similar to Mr Cummins') and going with a kit built, most likely an RV-7.

Nearly as fast as the Bonanza on far less fuel, capable of limited aerobatics, but most importantly, I can do the maintenance myself.

It was frustrating a bit ago when the flexible duct between the air filter and intake manifold started showing signs of deterioration. It's a silicone tube, 4" diameter, about 6" long, held in place by two hose clamps. Can I legally change it myself, or is it to be done only by a certified mechanic?

I did it while the mechanic replaced an air pump, so he signed the logbook for both. 100% legal.

In one of the few areas where the FAA uses common sense, the rule is if a guy builds his own airplane, he is probably qualified to maintain it.