Reduced lateral separation introduced over the North Atlantic
(Ottawa, December 3, 2015) – Aircraft flying over the North Atlantic will now be spaced closer together as part of a project to increase airspace capacity, cut fuel burn and reduce carbon emissions.
The project – called Reduced Lateral Separation or RLat - is an ICAO initiative being jointly introduced by UK air traffic services company NATS and NAV CANADA, the Canadian air navigation service provider.
The North Atlantic is the busiest area of oceanic airspace in the world, with most aircraft following tracks that are set each day based on the traffic demand and prevailing weather conditions such as the jet stream.
Currently these tracks are separated by one degree of latitude – the equivalent to 60 nautical miles – but advances in aircraft and air traffic management technologies mean that can now be safely reduced to half a degree. (See video
This reduction will allow more aircraft to achieve their optimum route and flight level, helping to cut flying times while reducing fuel burn and emissions.
Initially one additional track is to be introduced, creating three half degree separated routes for suitably equipped aircraft to fly, however half a degree is expected to become the standard separation minimum across the organized track structure in November 2016.
Phase 1 will add one additional track, creating three half degree separated routes
Once fully implemented the change will save an estimated 52,000 tonnes of carbon a year, the equivalent to 14,000 transatlantic flights.
Alastair Muir, Operations Director at NATS’ Prestwick control centre, said: “With RLat we are essentially turning a dual carriage way into a three-lane motorway without expanding the current road infrastructure.
“It’s another great example of how NATS and NAV CANADA are working collaboratively to bring about practical change that has a meaningful benefit for our airline customers as well as a positive impact on the environment."
Doug Dillon, NAV CANADA General Manager, Gander Flight Information Region said “RLat is a significant step forward in air traffic management over the North Atlantic. It immediately adds capacity and considerable improvements to efficiency as we prepare for a further reduction in separation through satellite-based ADS-B surveillance that the Aireon project will bring in 2018.”
NATS is a leading air navigation services specialist, handling 2.2 million flights in 2014/15, covering the UK and eastern North Atlantic. NATS provides air traffic control from centres at Swanwick, Hampshire and Prestwick, Ayrshire.
NATS also provides air traffic control services at 14 UK airports including Heathrow, Gatwick, Stansted, Manchester, Edinburgh and Glasgow; at Gibraltar Airport and, in a joint venture with Ferrovial, at a number of airport towers in Spain.
Building on its reputation for operational excellence and innovation, NATS also offers aerodrome, data, engineering and consultancy solutions to customers worldwide, including airports, air traffic service providers and Governments.
There is more information on the NATS website at www.nats.aero
About NAV CANADA
NAV CANADA is the country's private sector civil air navigation service provider. With operations from coast to coast to coast, NAV CANADA provides air traffic control, flight information, weather briefings, aeronautical information services, airport advisory services and electronic aids to navigation.
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