Yes, the Boeing 777-200 is specifically designed and certified to fly safely for extended periods on only one engine. This capability is verified through "ETOPS" (Extended-range Twin-engine Operational Performance Standards) certifications. In 2026, most 777s are approved for ETOPS-330, meaning the aircraft can fly for up to 330 minutes (5.5 hours) on a single engine to reach the nearest suitable diversion airport. If an engine fails during flight, the remaining engine has more than enough thrust to maintain altitude and perform a safe landing, even at maximum takeoff weight. The aircraft's flight control systems and electrical backups are triple-redundant, ensuring the pilot maintains full control of the plane. In fact, pilots train extensively in simulators to handle "engine-out" scenarios at the most critical moment—during takeoff. While the plane will fly slower and at a lower altitude (the "drift down" altitude) to optimize fuel and engine performance, the safety of the passengers is never compromised, as the 777 remains one of the most reliable twin-engine widebodies in aviation history.