New Separation Standard Permanently Adopted Over the North Atlantic

11/18/2020

Since the introduction of the Aireon Space Based ADS-B service in March 2019, NATS, NAV CANADA and NAV Portugal have been trialling the use of reduced separations standards – known as ASEPS or Advanced Surveillance-Enhanced Procedural Separation standards – for aircraft flying through oceanic airspace.

Having real-time surveillance over the ocean for the first time has made it possible for air traffic controllers to safely reduce the longitudinal spacing between aircraft from 40 nautical miles down to just 14 nautical miles, allowing more aircraft to share the fastest, most environmentally friendly routes.

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