When Diamond introduced the two-seat Katana to North America in 1995, it might as we’ll have been powered by alien technology. The 81-HP Rotax 912F3 was about as familiar to aircraft mechanics as brain surgery is to a plumber.

But all that has changed. Rotax has made serious market inroads and with the advent of light sport aircraft, it has become more familiar to maintenance shops and an overhaul infrastructure has sprouted.