Aeronautical Information Circulars (AIC) contain: information on long-term forecast of any major change in legislation, regulations, procedures or facilities; information of explanatory or advisory nature liable to affect flight safety; information or notification of explanatory or advisory nature concerning technical, legislative or administrative matters. The AIC are issued in four series:
- A – contains information concerning international IFR air traffic;
- C – contains information on IFR air traffic of concern only to the users in the Republic of Serbia and in Montenegro;
- D – contains information concerning VFR flying and is distributed internationally in accordance with the users’ requirements; and
- E – contains information on VFR flying of concern only to the users in the Republic of Serbia and in Montenegro.