An ATC service is provided according to the particular circumstances and class of airspace.
An Air Traffic Control Service shall include the provision of pertinent flight information.
Air traffic control service shall be provided:
a) to all IFR flights in airspace Classes A, B, C, D and E;
b) to all VFR flights in airspace Classes B, C and D;
c) to all special VFR flights;
d) to all aerodrome traffic at controlled aerodromes
Air Traffic Control Services are conducted by the following:
- TWR (aerodrome control service)
- APP (approach control service)
- ACC (area control service)