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  1. What is ETOPS and how does it work? - Aviation Stack Exchange

    Jun 12, 2015 · Certification ETOPS certification requires both the aircraft and the airline to comply with a set of standards. For the aircraft, the manufacturer must demonstrate that flying with …

  2. airliner - What is the main difference between an ETOPS certified …

    11 The FAA ETOPS certification requires certain standards from both the airline (the operator) and the aircraft (the manufacturer). As far as the manufacturers are concerned, the ETOPS …

  3. Are four-engined airplanes subject to ETOPS equivalent rules?

    Sep 5, 2014 · The ETOPS rules become relevant whenever a three- or four-engined jet diverts more than 180 minutes from the nearest airport. For more information, refer to the airliners.net …

  4. Which current commercial flights have the highest ETOPS ranking?

    Jan 11, 2018 · @SteveKuo: with highest rated ETOPS flight I mean commercial flights operating under the highest (in minutes) ETOPS rules (330, 370, 420 minutes). That somehow …

  5. Why does ETOPS not apply to older 4 engine aircraft?

    Jun 14, 2015 · This is a follow-up to my previous question: What is ETOPS and how does it work? There is a related question here, but it does not specifically answer this new question. Facts: …

  6. How are ETOPS diversion airports selected? - Aviation Stack …

    Feb 17, 2025 · I was doing a flight from Tokyo to Paris with an ETOPS rated plane and while looking at my dispatch, I noticed that my ETOPS diversion were further away than some other …

  7. Why ETOPS 207 minutes? - Aviation Stack Exchange

    Oct 17, 2018 · ETOPS 138 and 207 are 15% extensions of ETOPS 120 and 180. The reason for that is that with the ETOPS 120 rule, most of the Atlantic could be covered when using …

  8. ETOPS 330 vs ETOPS 370 etc; how are the exact minute ratings …

    Jun 12, 2017 · 14 I am curious how the ETOPS minutes categories are arrived at. i.e. Say, ETOPS 330 vs 370. What extra abilities would the 370 type have demonstrated that the 330 …

  9. 'etops' tag wiki - Aviation Stack Exchange

    ETOPS (originally E xtended-range T win-engine O perations, now often simply E x t ended O perations, colloquially E ngines T urn O r P assengers S wim) is a rule which permits twin …

  10. How does an ETOPS APU start in-flight? - Aviation Stack Exchange

    Aug 25, 2016 · An ETOPS APU has to be on-demand, i.e. must be able to start at any altitude. If it can't, then it's not shut down for the entire flight. Compared to a normal APU, what are the …