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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. B

by mjg59 3mo ago

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.

KolmogorovComp 3mo ago
No, the highest risk for dual engine failure is bird strike.
- stouset 3mo ago
  Which is not and never will be an issue for airliners transiting oceans under ETOPS.
  - scrumper 3mo ago
    It is at takeoff and landing, applies equally to ETOPS or otherwise.
    - stouset 3mo ago
      > I hate all the justifications used to fly long distances across oceans with only 2 engines, or only 1 engine. Which is why I specified that it’s equally as safe for airlines operating under ETOPS.
- mjg59 3mo ago
  There's US1549 and FR4102 - are there any others? But yes, the assumption about failures being independent is obviously violated by large flocks of birds, although this has also resulted in the loss of 4-engined aircraft.