How is an area of control designated within an ARTCC facility?

In an ARTCC (Air Route Traffic Control Center) facility, an area of control is designated as a sector. Each sector is a specifically defined airspace area managed by a team of controllers. These sectors are organized to optimize traffic flow and ensure safe distance between aircraft, allowing controllers to maintain a high level of efficiency and safety.

The designation of the term "sector" emphasizes a structured approach to air traffic control where the responsibilities are divided based on geographical areas and altitude levels. The use of sectors enables controllers to better manage the complexities of aircraft movements, ensuring that they can focus on a defined set of operations without becoming overwhelmed by the total volume of traffic.

Other terms like area, zone, and district might refer to larger sections of airspace or have different meanings within the context of air traffic management, but they do not specifically describe the operational divisions within an ARTCC as accurately as 'sector' does.