On an annual basis ENAC, an ENAC working group, named “ACAM Committee”, identifies the list of aircraft (in terms of number and type of inspections) that will be subject to ACAM Inspection. The list is drawn up according to a “Risk Based” approach that takes into account:

the findings raised of previous surveillance activities (not only coming from previous ACAM programme),
the knowledge and number of Aeronautical operators distributed throughout the territory, with particular reference to commercial transport operators and SPOs,
the “Occurrences” notified through the various channels, reports from EASA or other Authorities, as well as from the analyses resulting from SANA/SACA inspections, contingent conditions of unavailability.
The results of technical/maintenance events received by ENAC through the monitoring of certified/declared organizations, appropriately evaluated for homogeneous areas of interest (e.g. aircraft types, type of operations, etc.), may contribute to complementing the results for the determination of the sample of aircraft/operators that will constitute the annual programme.

On the basis of the selected criteria, the Committee shall assess the number, territorial distribution and type of aircraft categories to be inspected. These inputs allow to export, from the fleet data recorded by ENAC, the list of potential “registration marks” (among those which have a known airworthiness status and/or active). The total number of aircraft chosen for guidance covers approximately 10% of the “national fleet”, not necessarily distributed in equal percentages across the categories. The intended estimated aim, where possible and not exhaustively, is to cover the entire national fleet over a time interval of 10 years. As a rule, when selecting the sample, the priority will fall on aircraft that have never been inspected or that have been inspected later than 8/10 years, where there are no potential safety threads, except those where major issues are already known to ENAC. Aircraft for which operational, continuous airworthiness and maintenance oversight has been delegated to another EASA Authority (in case of agreement to transfer responsibility for airworthiness oversight and use (Art. 83 bis of the Chicago Convention) are excluded. Ad hoc assessments will be carried out on a case-by-case basis.