air route traffic control center
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air route traffic control center (ARTCC)
A facility established to provide air traffic control service to aircraft operating on IFR (instrument flight rules) flight plans within controlled airspace and principally during the en route phase of flight. When equipment capabilities and controller workload permit, certain advisory or assistance services may be provided to VFR (visual flight rules) aircraft. The boundaries of ARTCCs are indicated on the aeronautical charts as as with the names of respective ARTCCs written on either side of this boundary.