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Air Traffic Control Service
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| Article Information | ||
|---|---|---|
| Category: | General | 
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| Content source: | SKYbrary | 
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| Content control: | EUROCONTROL | 
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Description
Air traffic control service is a service provided for the purpose of:
- preventing collisions:
- between aircraft, and
- on the manoeuvring area between aircraft and obstructions; and
- expediting and maintaining an orderly flow of air traffic. (ICAO Annex 11)
Air traffic control service is provided:
- to all Instrument Flight Rules (IFR) flights in airspace Classes A, B, C, D and E;
- to all Visual Flight Rules (VFR) flights in airspace Classes B, C and D;
- to all special VFR flights;
- to all aerodrome traffic at controlled aerodromes.
Clearances issued by air traffic control units provide separation:
- between all flights in airspace Classes A and B;
- between IFR flights in airspace Classes C, D and E;
- between IFR flights and VFR flights in airspace Class C;
- between IFR flights and special VFR flights;
- between special VFR flights when so prescribed by the appropriate ATS authority,
Further Reading
ICAO Annex 11 Chapter 3 ICAO Doc 4444: Procedures for Air Navigation Services- Air Traffic Management (PANS-ATM)