A few years back we acquired some Airbooses. The scheduling committee tried drawing up a nice efficient schedule for their operation that included no maintenance downtime. When we queried this, they responded with "...Aerospatial advised us they were maintenance free for the first six years..."
As for keeping them serviceable, we do a lot more than that but only the handful of pilots who get assigned to jobs like "Fleet Technical Captain" ever get to more than scratch the surface. Lets face it boys and girls, we'll never be anything more than just "Blunties" * to the Two Winged Master Race.
*...and "Blunties" is the polite expression. I've been called worse. To my face.