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Longman Dictionary of Contemporary English
air traffic control
noun
EXAMPLES FROM CORPUS
▪ I would have needed an air traffic control centre to keep track of where everyone was at any given moment.
▪ Mogadishu s transitional government has started talking of reopening the capital s airport and getting its air traffic control back.
▪ The co-operation of air traffic control is central.
Wiktionary
air traffic control

n. A system designed to give assistance to aircraft, to prevent collisions and to manage aircraft flow.

Wikipedia
Air traffic control

[[Image:Tour Bordeaux.jpg|thumb|

Airport Traffic Control Tower at Bordeaux–Mérignac Airport.

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Air traffic control (ATC) is a service provided by ground-based controllers who direct aircraft on the ground and through controlled airspace, and can provide advisory services to aircraft in non-controlled airspace. The primary purpose of ATC worldwide is to prevent collisions, organize and expedite the flow of air traffic, and provide information and other support for pilots. In some countries, ATC plays a security or defensive role, or is operated by the military.

To prevent collisions, ATC enforces traffic separation rules, which ensure each aircraft maintains a minimum amount of empty space around it at all times. Many aircraft also have collision avoidance systems, which provide additional safety by warning pilots when other aircraft get too close.

In many countries, ATC provides services to all private, military, and commercial aircraft operating within its airspace. Depending on the type of flight and the class of airspace, ATC may issue instructions that pilots are required to obey, or advisories (known as flight information in some countries) that pilots may, at their discretion, disregard. The pilot in command is the final authority for the safe operation of the aircraft and may, in an emergency, deviate from ATC instructions to the extent required to maintain safe operation of their aircraft.

Air Traffic Control (band)

Air Traffic Control is a power pop/rock band hailing from Nova Scotia's South Shore, not to be confused with the separate Boston based Air Traffic Controller. The band has a history that predates even its current name. Brothers Kirk and Jordi Comstock made their first foray into music while in elementary school. By 1991, both were playing all-ages shows in and around their hometown of Lunenburg, Nova Scotia and it was only a matter of time before they would plant the seed of what would eventually become one of the Maritimes' biggest cult followings.

Originally founded under the Madhat moniker, they recruited a bassist (one of nearly a half-dozen who would come and go until 2005) and released the independent EP Freak in 1993. This received the attention of local radio station CKBW who would feature the trio prominently through local programming bringing Madhat to a wider audience.

1995 would bring about Hardhitters, the band's second EP followed by Full Length in 1998, the boys' first full-length effort. The critical success of the latter elevated Madhat to a national audience.

In 2005, Madhat renamed themselves Air Traffic Control. They released a new self-titled album on February 12, 2005 to critical acclaim and garnering a nomination for New Group of the Year at the Nova Scotia Music Week conference. The trio's opening track, 'Feel Proud' was selected as the title song for the Electronic Arts game Rugby 2005 and has been featured in the YTV series 15 Love.

Usage examples of "air traffic control".

If we'd been in direct contact with Air Traffic Control, we'd have been told the aircraft was out of radio contact for hours.

Once he was steady he pushed the transmit button on the stick, reporting in to Air Traffic Control at Kai Tak.

As the system works now, a flight under visual flight rules can enter the air traffic control system anywhere.

Suppose we reconfigure a dozen or so survey sats and tie their weather radar into the air traffic control net?

And they also pulled double duty as weather satellites, air traffic control radar arrays, law enforcement surveillance platforms, and traffic control points for any freighters which called here.