IFATCA Policy is:

Air Traffic Control service shall be provided at aerodromes that:

• have published IFR approach, departure or holding procedures, and where control is required for the safety of air traffic.
• for VFR operations, where required to ensure that appropriate safety levels are met.

At aerodromes at which air traffic control is provided, the appropriate airspace classification should be provided.

Where the above factors do not apply, Aerodrome Flight Information Service (AFIS) may be provided, but shall never be used as a substitute for Air Traffic Control Service. Where AFIS is in operation the limitations of the service shall be added to the station RTF callsign.