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The inherent design weakness on the Cessna 185,180 and 182 trim controlled horizontal stabilizer attachments cracking is not just from tailwheel landings. Floatplanes crack out just as much as nose wheel planes. Cessna has been selling these replacement parts in volume for many decades. Every time Cessna would manufacture a dozen or so of these parts they would sell out in just a few days. Just another design issue that took decades to bring to the FAA’s attention. Don’t sight the FAA for this one. Basic 101 lawyer policy, “admit nothing… deny everything”. If you don’t, you’re responsible and liable. It’s a Fifth Amendment thing .

It would be worth someone’s time to mount a gopro and watch the tail shake when full flaps are deployed and at higher speeds.