Classification of Airspace

ATS airspace is classified and designated in accordance with the following:

Class A. Instrument Flight Rules (IFR) flights only are permitted, all flights are provided with air traffic control service and are separated from each other

Class B. Instrument Flight Rules (IFR) and Visual Flight Rules (VFR) flights are permitted, all flights are provided with air traffic control service and are separated from each other.

Class C. Instrument Flight Rules (IFR) and Visual Flight Rules (VFR) flights are permitted, all flights are provided with air traffic control service and IFR flights are separated from other IFR flights and from VFR flights. VFR flights are separated from IFR flights and receive traffic information in respect of other VFR flights.

Class D. Instrument Flight Rules (IFR) and Visual Flight Rules (VFR) flights are permitted and all flights are provided with air traffic control service, IFR flights are separated from other IFR flights and receive traffic information in respect of VFR flights, VFR flights receive traffic information in respect of all other flights.

Class E. Instrument Flight Rules (IFR) and Visual Flight Rules (VFR) flights are permitted, IFR flights are provided with air traffic control service and are separated from other IFR flights. All flights receive traffic information as far as is practical. Class E shall not be used for control zones.

Class F. Instrument Flight Rules (IFR) and Visual Flight Rules (VFR) flights are permitted, all participating IFR flights receive an air traffic advisory service and all flights receive flight information service if requested.

Class G. Instrument Flight Rules (IFR) and Visual Flight Rules (VFR) flights are permitted and receive flight information service if requested.

(ICAO Annex 11: Air Traffic Services, Chapter 2, Section 2.6)