Definition
An FAA facility that provides air traffic control service to aircraft operating on IFR flight plans within controlled airspace, principally during the en route phase of flight. Each ARTCC is responsible for a large geographic area of airspace divided into sectors, with controllers handing off aircraft from one sector to the next and from one Center to adjacent Centers as the flight progresses.
Plain English
A regional air traffic control facility that watches over and directs IFR aircraft while they are cruising between airports, rather than near the airport itself. Pilots usually call it 'Center' on the radio.
Context Anchor
You will see ARTCCs in instrument flying, flight planning, and navigation system discussions, especially when a flight moves from local airport control into the en route part of the flight.
Derivation
The name describes the function in plain terms: a center that controls traffic along air routes. 'Route' comes from the Latin rupta via, meaning 'broken' or 'opened way' — the established airway path between locations. The name reinforces that ARTCCs handle aircraft along the airway structure, not in airport traffic patterns.
Why Pilots Care
Pilots rely on ARTCC for safe separation from other traffic and for amended clearances while flying cross-country under IFR.
Intuition Check
Do not think of an ARTCC as a control tower at one airport. It is a regional control facility responsible for aircraft moving through a broad area between airports.
Example Sentence 1
After departure, the tower instructed the pilot to contact Indianapolis Center on 121.05 for en route control.
Example Sentence 2
ARTCC cleared the flight direct to the next waypoint after coordinating with the next sector.