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Air Traffic Control Overview | ATC Facilities | Radar ATC Facilities Airport towers - Control aircraft while they taxi to and from runways and during takeoffs and landings. More than 400 airports have towers which are organized into the following:
Air Route Traffic Control Centers (ARTCC) - Known as "en route" centers, each directs and coordinates IFR and participating VFR traffic within controlled airspace, principally during the en route phase of flight; there are 22 ATC centers in the U.S. airspace system: Albuquerque, Anchorage, Atlanta, Boston, Chicago, Cleveland, Denver, Fort Worth, Guam, Houston, Indianapolis, Jacksonville, Kansas City (KS), Los Angeles, Memphis, Miami, Minneapolis, New York, Oakland, Salt Lake City, Seattle and Washington, D.C. Flight Service Stations (FSS) - Serve as information centers for pilots; have no direct air traffic authority over either VFR or IFR traffic; provide weather information and emergency assistance; flight plans are filed with the FSS; they also issue and disseminate NOTAMS. Automated Flight Service Stations - An electronic service, providing pilots with weather and flight planning information. Air Traffic Control System Command Center (ATCSCC) - Also known as "central flow control," it is based in Herndon, Va., and manages traffic flow across the country in an effort to avoid excessive traffic buildup in any one section of airspace.
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