🚀 LATEST: Global Aviation News is now Live ✈️ TRACKER: Spot any aircraft, anywhere 📩 SUBSCRIBE: Get the Daily Aviation Briefing

The Invisible Corridors: Why ETOPS Regulations Funnel Transpacific Flights Into Narrow Routes

Transpacific flights are largely confined to specific, narrow air corridors due to stringent safety regulations. These rules, known as ETOPS, mandate that twin-engine aircraft must always remain within a certain flying time of a suitable diversion airport. The vastness of the Pacific Ocean and the scarcity of available airfields mean that routes must hug coastlines or island chains. This creates predictable flight paths that might not always be the most direct great-circle route. Aircraft with four engines historically had more freedom, but the efficiency of modern twin-jets makes adherence to these corridors a standard operational practice.

Official Source: https://simpleflying.com/hidden-rules-force-transpacific-flights-same-narrow-corridors/