ETOPS

Rare card · No. 63832

ETOPS (; Extended-range Twin-engine Operations Performance Standards, or sometimes Extended Twin Overwater Passenger Service) are safety standards set by the International Civil Aviation Organization (ICAO) for twin-engine commercial passenger aircraft operations. They are a safety measure intended to ensure that in the event of a single engine failure, an aircraft will still be able to reach a diversion airport using the remaining operational engine, albeit at a reduced speed or altitude. The standard typically applies to long-distance routes over water or remote areas, which were historically restricted to three- and four-engine aircraft. Twin-engine passenger airliners are typically restricted to areas within a one-hour flying time of a suitable airport on one operational engine. ETOPS-90 certification extends this to a 90-minute flying time, ETOPS-180 to 180 minutes, etc. Similar limits have since been applied to three- and four-engine airliners. In some cases, "ETOPS" is still used...

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