Yes, aircraft fly over the ocean every day, but they must adhere to strict regulations known as ETOPS (Extended-range Twin-engine Operational Performance Standards). These rules determine how far a twin-engine plane can fly from the nearest suitable airport where it could land in the event of an engine failure. Modern aircraft like the Boeing 787 Dreamliner or Airbus A350 have ETOPS ratings that allow them to fly over the most remote parts of the Pacific or Atlantic for over five hours on a single engine. For pilots, flying over the ocean (Oceanic Flight) involves specialized procedures because there is no traditional radar coverage in the middle of the sea. Instead, they use satellite-based tracking (ADS-B) and high-frequency (HF) radio or data-link communications to report their position. This ensures that even without land-based radar, Air Traffic Control always knows the aircraft's precise location and altitude.