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Air Traffic Control Entities 26 October 2021 If you have been to an airport, you might have noticed a tall cylindrical building with a glass room on the top with antennas. This is the air traffic control tower, providing a ground-base service that directs aircrafts both on the ground and in the airspace. The main purpose of having an air traffic control is to prevent mishaps and any accidents by controlling the flow of aircrafts and communicating with the pilots to provide critical information. The air traffic control is ran by the FAA and are split up in entities such as Ground, Tower, Radar, Clearance Deliver, and the Air Route Traffic Control Centers The Air Route Traffic Control Centers (ARTCC) provides air traffic service to aircrafts operating under controlled air space as well as en route phases of flights and airways (National ATC, 2021). There are 21 ARTCCs in the United States, split into sectors, each responsible for controlling air traffic within the United State