Originally Posted by
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I don't have access to a 777 checklist but I'd wonder what line of thinking would go in to shutting down a motor when over the middle of the ocean. I can see shutting it down over land or if the vibration was above tolerances and creating control issues but the little bird on my shoulder would be screaming keep it running over the middle of the water....
The plane is completely capable of flying over water with one engine shut down. Lots of thought went into it. They even made up a fancy acronym for it.
It’s a judgment call what to consider excessive vibration. You will know it when you see it. Let’s wait for the facts to come out.