NATS (National Air Traffic Services) - United Kingdom

Visiting address

Postal address

4000 Parkway,

Whiteley, Fareham, Hants , PO15 7FL

United Kingdom

Contact

Tel +44 1489 616 001

Fax +44 1489 616 406

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Association information

Our purpose

“Advancing aviation, keeping the skies safe”

We are making the skies an even safer and more efficient environment for flying. This means that we are making the skies a better place to fly.

Air Traffic Control

Safety is paramount

NATS provides air traffic navigation services to aircraft flying through UK controlled airspace and at numerous UK and international airports. So how do we move over 6,000 flights every day through busy skies around the world safely and efficiently?

The guiding principle of air traffic control is that safety is paramount. Controllers must keep the aircraft they handle safely separated using internationally agreed standards. They achieve this by allocating different heights to aircraft or by arranging minimum horizontal distances between them. These distances vary according to circumstances, but aircraft flying along the airways under radar surveillance, for example, are kept five nautical miles apart horizontally or at least 1,000 feet vertically.

Managing controlled airspace

UK airspace contains a network of corridors, or airways. These are usually ten miles wide and reach up to a height of 24,000 feet from a base of between 5,000 and 7,000 feet. They mainly link busy areas of airspace known as terminal control areas, which are normally above major airports. At a lower level, control zones are established around each airport. The area above 24,500 feet is known as upper airspace.

All of these airways are designated “controlled airspace”. Aircraft fly in them under the supervision of air traffic controllers and pilots are required to file a flight plan for each journey, containing details such as destination, route, timing and height.

What happens outside controlled airspace?

Within controlled airspace, pilots must follow controllers’ instructions. Outside controlled airspace they take full responsibility for their own safety, although they can ask for help.

Military controllers work closely with their civilian colleagues to provide a fully integrated service to all users. They offer an air traffic service to aircraft in uncontrolled airspace. Military personnel also provide services to aircraft crossing airways and for those flying above 24,500 feet. A priority task for them is helping aircraft in distress.

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