A330 Driver – ETOPS with Four Engines?

A nice explanation from “A330 Driver”.

Why ETOPS rules not only apply to 2 Engine Aircrafts. ETOPS, originally short for “Extended-Range Twin Operations Performance Standards”, or more recently just plain Extended operations, is the rating that allows twin-engined aircraft to fly long distances; particularly over large bodies of water like oceans. ETOPS is a set of rules that enhance safety when flying over areas of the world that have few airports that can be used in an emergency.

But how about an Aircraft with 4 engines:


See also this explanation on the website from AeroSaffy.
And when you google far more information.

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