The Italian Aeronautical Information Feature Service (AIFS) provided by ENAV allows the consumers to acquire official aeronautical data in AIXM 5.1.1 format of the geographical area of ENAV responsibility. Based on AIRAC cycle publication model/schedule, such data are related to the current (effective cycle) and next (planned cycle) Air Navigation Infrastructures used by Air Traffic, such as aerodromes, airspaces, navigation aids, ATS routes, etc. The so-called .