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Earlier this year I joined a Mooney Rocket partnership, though only recently have I begun flying it. The performance is phenomenal, especially compared to the Piper Cherokees I came from. As part of my checkout, I flew a 900nm trip in an afternoon and cruised easily in the O2 levels--something unimaginable to me only a few months ago. With the Pipers, I was very involved with the maintenance, and I've continued to be involved with the Mooney. We've had several large mx issues since I've joined, and though I'm fortunate to work with an A&P who is both meticulous and communicative, his time is limited, and so I'm hoping the collective experience of MSers will fill in my knowledge gaps. The latest issue is with the engine truss. One of the beams close to the turbo was corroded. If I understand correctly, the heat of the turbo corroded the paint, which opened the truss to additional corrosion. It's been cleaned off, but there's some question whether that section needs to be replaced completely. My A&P has contacted Rocket Engineering to see whether we're still within guidelines of AC 43.13-1B (where a 10% reduction in material is acceptable). In the meantime, I'm looking to learn more about it, how to avoid it, etc... in general, anyone else's experience with this. Thanks!

Has anyone installed the engine mount gussets required by SB M20-192A to eliminate the recurrence of the AD? Does someone sell these gussets and about how much did it the whole work cost you? We are overhauling our engine and now would be the time to do it.