Wm.Ince wrote:Was that a chronic failure? If not, and it was considered an isolated incident, aren't you kind of painting ("red flagging") with a very wide brush?
Not an isolated case, Bill, just the first one with which I had personal experience. But it is common enough that it was mentioned in my biennial Rotax Heavy Maintenance course a year ago as a known problem. And, when my former students mentioned their problem to Lockwood, they were asked the crankcase s/n and then told Lockwood knew all about the failure mode. So, it appears not all that uncommon (although it's true that many of the early engines did make it to 2500 hours or beyond).