air traffic control

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air traffic control,

the system by which airplanes are safely routed into and out of major airports. Air traffic control in the United States is centered in a number of regional control centers that route airplanes along established airways to airport traffic control centers. There Instrument Landing Systems and Microwave Landing Systems enable planes to land safely in almost any weather conditions. Air traffic controllers, who are responsible for maintaining safe distances between planes, are employees of the U.S. Dept. of Transportation. Air traffic control is made possible by special transponders installed in every commercial and many private aircraft, which automatically transmit information on a plane's altitude and speed to the ground controller. The distortion that often affects voice transmissions can be eliminated by the use of cockpit datalinks; collision avoidance systems provide further safety margins. Knowing the course, speed, and altitude of every plane in the sector, the controller can contact each in turn to give landing or course instructions. Modern air traffic control has contributed to making air travel far safer than highway travel, and on a passenger-mile basis safer even than rail travel.

air traffic control (ATC)

A service provided by the appropriate authority to promote the safe, orderly, and expeditious flow of traffic.
References in periodicals archive ?
Air traffic controllers clear the helicopter to enter the Glasgow control zone.
The post Greek air traffic controllers strike, seeking EU-based reforms appeared first on Cyprus Mail .
He brings his best to his job, and goes above and beyond by taking an active role to improve the technology and systems utilized by air traffic controllers around the country.
The Committee also confirmed its continuous support to the public sector employees' demands, pointing that the Committee would continue coordinating with it in favor of the interests of both public sector employees and air traffic controllers.
The committee of air traffic controllers is organizing a strike Tuesday to remind officials of its demands as they discuss the enactment of a new salary scale," a statement released by the committee said.
The Air Traffic Controllers European Unions Coordination (ATCEUC), consisting 28 unions and 14,000 members, set 29 January 2014 as the action day, while the European Transport Workers Federation (ETF) will
The dinner gala took place at Yas Links and was attended by Ahmed Al Jallaf, Executive Director of Air Navigation Services and a large number of air traffic controllers from all emirates.
Both aircraft were in so-called 'uncontrolled' airspace where pilots have a responsibility to 'see and avoid' a collision based on information given to them by air traffic controllers.
The median annual wage of air traffic controllers was $108,040 in May 2010.
The air traffic controllers, in violation of their contracts, went on strike," Christie recalled.
European air navigation services provider EUROCONTROL on Thursday announced that the International Federation of Air Traffic Controllers Association (IFATCA) is celebrating the International Day of the Air Traffic Controller.
AIR TRAFFIC CONTROLLERS WORK WITHIN THE NATIONAL AIRSPACE system to ensure the safety of aviation passengers by coordinating the movement of air traffic--including takeoffs and landings--to make sure that planes stay a safe distance apart.

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