Is there a good set of rules or guidelines to know when to repaint a plane? 1974 C172 M owner. It was repainted at least once. Decent curb appeal from 20 feet. I had Corrosion X done a bit ago, now spending some time cleaning the plane, waxing, lots of elbow grease. So far I have done just the top of the cabin and top of the wings. Some observations: -During pre buy the mechanic pointed out some issues with paint under the wings, it is just a bit rough, maybe even orange peel like. -Some other colors show through in spots indicating the original paint might still be on, or not all of it was taken off. -Flaps and ailerons are shinier, newer looking, but have drip marks or runs as if I painted them... -There is some rust on screwheads. -There are a few spots absent of paint, seems to be near what I would think of stress points or where hardware attaches. In reading about paint I read that a failure to strip old paint can subtract forty pounds from ones useful load. My useful load is 770#, would love 40# more! So when do folks normally repaint their planes? How did you arrive at the decision to paint? Do folks normally replace plastic trim and plastic windshields at the same time? I am on the waiting list for a hanger... Thanks.