# ATC (Air Traffic Control)

*Last updated: 2026-06-16*

> The moment an aircraft enters controlled airspace, Air Traffic Control (ATC) takes over: qualified controllers in area control centres, approach facilities, and airport towers issue binding clearances covering altitude, heading, and speed.

The moment an aircraft enters controlled airspace, Air Traffic Control (ATC) takes over: qualified controllers in area control centres, approach facilities, and airport towers issue binding clearances covering altitude, heading, and speed. The core objective is maintaining prescribed separation minima – both horizontal and vertical – to prevent collisions and keep traffic moving efficiently. ATC is structured into distinct phases: ground movement control, departure and approach control, and en-route area control. For air freight operators, ATC holds and delayed departure clearances translate directly into missed slot times and late deliveries, making controller decisions a tangible operational variable. ATC should not be confused with Air Traffic Management (ATM), the broader framework within which ATC operates as one component.

**Source:** [https://www.icao.int/safety/airnavigation/pages/atm.aspx](https://www.icao.int/safety/airnavigation/pages/atm.aspx)

## Quick Facts

| Property | Value |
|---|---|
| Term | ATC (Air Traffic Control) |
| Language | EN |
| Word count | 117 |
| Last updated | 2026-06-16 |
| Source | https://www.icao.int/safety/airnavigation/pages/atm.aspx |

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