This is exactly what happened on my VQ P38. While running at about 3/4 throttle she rolled to inverted when I lost one engine. I chopped the throttle,rolled it over,dropped the gear and lucky me I was in perfect position to land. It turns out one of the headers, on my OS91 4 strokes , broke off flush with the head, causing the engine to quit.Vibration seems to have been the problem.
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