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First real-time, global air traffic surveillance system ‘Aireon’ goes live

Aireon, the first real-time, global air surveillance system, is fully operational and in trial use over the North Atlantic. This announcement marks a historic milestone for the aviation industry— ushering in a new era of safety and efficiency that will revolutionize the way people fly.

Aireon's space-based Automatic Dependent Surveillance Broadcast (ADS-B) system provides real-time air traffic surveillance and tracking to 100% of ADS-B equipped aircraft on the planet. Prior to Aireon's system coming on-line, traditional ground-based surveillance covered just 30% of the globe, meaning civil aviation authorities, commercial carriers and related industry stakeholders relied upon position updates from aircraft every 10-14 minutes to track aircraft outside of radar coverage, not the real-time updates that the Aireon service provides.

The Aireon system is expected to reduce overall safety risks by approximately 76% in the North Atlantic according to a joint analysis by NAV Canada and NATS – the first Air Navigation Service Providers (ANSPs) to use the service. Improved visibility and control over previously un-surveilled airspace—especially across oceanic regions—will allow airlines to fly routes at optimal speeds and levels, delivering expected cost savings of up to US$300 per transatlantic flight, plus reducing carbon dioxide emissions by two tonnes per flight, based on an analysis conducted by NATS and the International Civil Aviation Organization (ICAO).

Use of the Aireon system over the Atlantic allows for air traffic controllers to trial the reduction of aircraft in-trail separation distances from 40 nautical miles (nm) to just as little as 14nm, making the airspace more flexible, predictable and able to accommodate the immense growth predicted in the coming years.

“To know the position, speed and altitude of every ADS-B equipped aircraft in oceanic airspace – in real-time – is a transformational change to how our controllers manage air traffic,” said Neil Wilson, of NAV CANADA. “The Aireon system provides an immediate boost to aviation safety and airlines will benefit from more fuel-efficient routings and flight levels. Over 95 percent of the North Atlantic traffic is already ADS-B equipped so the fuel savings, along with the reduced carbon dioxide emissions will be attained very quickly.”

Regulations mandating ADS-B equipage on aircraft have already been implemented throughout the world, going into effect in the United States in January 2020 and in Europe in June 2020. countries are in the process of drafting mandates for implementation over the next few years.

Martin Rolfe, NATS CEO, said, “The trial in the North Atlantic, the busiest oceanic airspace in the world, with over 500,000 flights every year and a forecasted 800,000 flights per year by 2030, will demonstrate to the entire aviation industry, that global, space-based ADS-B can revolutionize the service that we provide to our customers and the travelling public by transforming the way we perform air traffic management over remote regions.”

Eight years in the making, Aireon's ADS-B payloads are hosted on the Iridiumâ NEXT satellite constellation—the final deployment of which took place January 11, 2019. After receiving control of the final six ADS-B payloads from on February 7, 2019, Aireon completed payload testing, validation and calibration stages prior to launching the full system into operation to support current ANSP customers.

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