| ▲ | stouset 3 hours ago |
| You mean the justification that they are, in fact, just as safe? |
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| ▲ | GMoromisato 2 hours ago | parent [-] |
| I'm curious about this--wouldn't one expect more engines to be safer? Unless having more engines increases the chance of certain kinds of accidents? Like maybe the chance of an engine failure damaging the hull goes up with more engines? Not questioning the justification--I do believe it--I'm just curious about the details. |
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| ▲ | mjg59 an hour ago | parent [-] | | All else being equal, potentially - although as I mentioned there have been cases where one engine falling off a 4 engine aircraft hit another in the process. But ETOPS certification is based on it being demonstrated that engines are sufficiently reliable that the probability of an independent failure is incredibly unlikely, and also requires that operators have a stricter maintenance process. The only dual engine failures on modern two-engine aircraft I can think of off-hand have been fuel exhaustion (either actually being out of fuel, or ice blocking fuel filters in the case of BA38), and would have affected 4-engine aircraft just as badly. | | |
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