This means that the aircraft can fly routes that take it as far as 330 minutes (five and a half hours) of single-engine flying time from the nearest viable airport. Other twin-engine airliners, like the Boeing 777, are also certified for ETOPS 330. The Boeing 767 is certified for as much as 180 minutes of ETOPS.

Modern twin-engine airliners are incredibly resilient and are certified under ETOPS (Extended-range Twin-engine Operational Performance Standards) to fly for extended periods on a single engine. Depending on the specific aircraft and airline certification, a plane can fly for 180, 330, or even 370 minutes (over six hours) with one engine inoperative. For instance, the Boeing 787 Dreamliner and the Airbus A350 are certified for high-level ETOPS, allowing them to traverse vast oceans like the Pacific where diversion airports are sparse. These ratings are based on the proven reliability of modern jet engines, which are designed to handle the increased load of solo operation while the pilot navigates to the nearest suitable airport. While an engine failure is a serious event, it is not a "crash" scenario; pilots are extensively trained for "one-engine-inoperative" flight, and the aircraft maintains enough power to climb, cruise, and land safely. The goal of ETOPS is simply to ensure the plane is never further away from a runway than the time its remaining engine is guaranteed to keep it safely in the air.