Air traffic control

The air traffic control tower of Mumbai International Airport in India

Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through a given section of 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.[1]

Air traffic controllers monitor the location of aircraft in their assigned airspace by radar and communicate with the pilots by radio.[2] To prevent collisions, ATC enforces traffic separation rules, which ensure each aircraft maintains a minimum amount of empty space around it at all times. It is also common for ATC to provide services to all private, military, and commercial aircraft operating within its airspace, not just civilian aircraft.[citation needed] 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.[3]

  1. ^ "FAA 7110.65 2-1-1". Archived from the original on June 7, 2010.
  2. ^ "How air traffic control works | UK Civil Aviation Authority". www.caa.co.uk. Archived from the original on February 26, 2021. Retrieved January 21, 2021.
  3. ^ "Electronic Code of Federal Regulations (eCFR)". Electronic Code of Federal Regulations (eCFR). Retrieved January 21, 2021.