ETOPS area

An ETOPS area is an area containing airspace within which an ETOPS approved aeroplane remains in excess of the specified flying time in still air (in standard conditions) at the approved one-engine-inoperative cruise speed from an adequate ETOPS route alternate aerodrome.

Source: EU-OPS

See also:
<a href="http://flightcrewguide.com/wiki/infl-terminology/adequate-etops-en-route-alternate-aerodrome/" title="Adequate ETOPS en-route alternate aerodrome">Adequate ETOPS en-route alternate aerodrome</a>
<a href="http://flightcrewguide.com/wiki/infl-terminology/approved-one-engine-inoperative-cruise-speed/" title="Approved one-engine-inoperative cruise speed">Approved one-engine-inoperative cruise speed</a>
<a href="http://flightcrewguide.com/wiki/infl-terminology/etops-extended-range-operations-two-engine-aeroplanes/" title="ETOPS (Extended range operations for two engine aeroplanes)">ETOPS (Extended range operations for two engine aeroplanes)</a>
<a href="http://flightcrewguide.com/wiki/infl-terminology/etops-area/" title="ETOPS area">ETOPS area</a>
<a href="http://flightcrewguide.com/wiki/infl-terminology/etops-planning-minima/" title="ETOPS planning minima">ETOPS planning minima</a>
<a href="http://flightcrewguide.com/wiki/preflight/types-etops-en-route-alternates-2/" title="Types of ETOPS En-Route Alternates">Types of ETOPS En-Route Alternates</a>