Current title holder for the aircraft with the longest ETOPS rating is the Airbus 350-900, certified to fly for up to 370 minutes on one engine. That gives it a maximum diversion distance up to 2500 nautical miles, or 4630 kilometres.

Modern twin-engine aircraft are governed by ETOPS (Extended-range Twin-engine Operational Performance Standards) ratings, which determine exactly how long a plane can fly on a single engine to reach an emergency diversion airport. As of 2026, the current record-holder is the Airbus A350-900, which is certified for 370 minutes—or over six hours—of flight on one engine. This allows it to fly virtually any route across the globe, including the most remote parts of the Southern Ocean. Historically, planes were restricted to staying within 60 minutes of an airport, but the extreme reliability of modern jet engines has pushed these limits further. Pilots are extensively trained to handle "engine-out" scenarios; the aircraft is designed to maintain altitude and control even with 50% loss of power. In practice, if an engine fails over the Atlantic, the ETOPS rating ensures the plane has enough fuel and performance to reach a safe landing site in Greenland, Iceland, or the Azores, making engine failure a manageable emergency rather than a catastrophe.