Quote:
Originally Posted by hharney
Another interesting bit of info was that on several structural pieces in the cabin and on the wing panels it is stamped M-337. Lots of parts are marked that way, I think 2JF is part O-2. Cool!
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All of the sheet metal parts on the O-2 airplanes are the same part number with a "CP" suffix. The "CP" means that these parts were etched, alodined and primed. The "CP" stands for corrosion proofed according to a friend that used to work at the Cessna Wallace plant. This is also true with airplanes built with the seaplane option (180's and 185's).