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It only takes one. For what? I've had three, all involved still breathing and still flying. The DC-10 fireball at Indiana was survived by many. It had three engines, was flying over a number of suitable asphalt runways, was not ETOPS, (E-THROPS?) and yet 180 people perished. An uncontained Turbine failure. The old arguments were mooted long, long ago. Fuel? That can be a problem anytime. Simultaneous failure? likewise. I will emphatically agree that loss of two engines in ETOPS is doodoo land. It is also a forced landing in a four engined a/c, generally. Think about it. It is certainly a forced landing in a three engined a/c. AF