The criteria applied by the SYRIA in grouping aerodromes for the provision of information in this AIP are as follows:
Aerodromes of entry and departure for international air traffic, where all formalities concerning customs, immigration, health, animal and plant quarantine, and similar procedures are carried out, and where air traffic services are available regularly.
Other aerodromes available for entry or departure of international air traffic, at which the formalities of customs, immigration, health, and similar procedures and air traffic services are made available on a restricted basis to flights, with prior approval only.
An aerodrome available only for domestic air traffic, where civil air traffic is allowed under certain conditions.