What does ETOPS mean in EASA?

ETOPS is an acronym that stands for “Extended-range Twin-engine Operational Performance Standards”. In 1985, special allowance was given to Trans World Airlines to fly their twin-engine 767 transatlantic from Boston to Paris. This was the first ETOPS certification rating given: ETOPS 120 minutes.



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2015 to fly beyond 180 minutes from an en-route alternate airport, the 747-8's design is approved to conduct 330-minute ETOPS missions. These missions allow operators to fly long-distances more directly on virtually any worldwide city pair routing.

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Reaching 370 minutes
The A350XWB was the first aircraft to receive the current maximum, ETOPS 370 rating.

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ICAO. EDTO – Extended Diversion Time Operations. ICAO amendment 36 replaced the term ETOPS with the new term EDTO (Extended Diversion Time Operations). The main reason of this change in the terminology was to better reflect the scope and applicability of these new standards.

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How long can a 747 fly without engines? For example, with a glide ratio of 15:1, a Boeing 747-200 can glide for 150 kilometres (93 mi; 81 nmi) from a cruising altitude of 10,000 metres (33,000 ft).

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Years ago, piston engines were undependable. Because of this, twin-engine aircraft were required to fly in range of a suitable airport for landing. In 1953, the FAA imposed what is known as the “60-minute rule” on two- and three-engine airplanes, disallowing them to fly more than 60 minutes outside the closest airport.

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