My oldest airplane is an Airtronics Olympic II, built in 1978. Not flown much since 1984, maybe averaged out to 1 use in 3-4 years. The next oldest is an RCM .60 sized trainer built in 1982, not used since 1986 or so. I've sold 5 airplanes in my lifetime. I have 6 ready to go now, one a building and all the rest have crashed. If you fly them, they will crash! However, I like to think I've passed the "Dumb Thumbs" stage and generally loose a plane to pushing the envelope, loosing in the sun, not paying close enough attention; or, mechanical failure. Oh, wait a minute, some of those are probably still "Dumb Thumbs!"