Our F150H is 50 this year. So far the only corrosion has been external with a running fight against worm trails particularly on the skin to leading edge joint top and bottom of the wing. We had both main gear supports replaced due to corrosion (big job) quite a few years ago. I would put that down to the design and installation of the blade type undercarriage rather than a pure metal problem. Internally so far nothing at all.
I would hesitate to buy an older non Reims Cessna.
Last edited by ericferret; 23rd Jul 2017 at 10:59.