1.4.1.1.1 The aerodrome/heliport of entry and departure for international air traffic, where such formalities as customs, immigration, public health, and animal and plant quarantine are carried out and where air traffic services (ATC and ATIS) are available on a regular basis.

1.4.1.2.1 An aerodrome used for domestic air traffic only and where air traffic services are available on a regular basis.

1.4.1.3.1 A stolport is an aerodrome available for the use of STOL aircraft.

1.4.1.4.1 An aerodrome for military air traffic only.