Regulation (EU) 1321/2014 and further subsequent amendments, specifically Part M paragraph M.B.303 and Part ML in paragraph ML.B.303, requires each Authority to draw up a programme of inspection activities to monitor the airworthiness status of the aircraft fleet recorded in the State “National’ register, according to a sample inspection scheme. The inspection activities define the ACAM Programme and are configured as “Product verifications” on a sample of “National Fleet” aircraft selected according to a “Risk Based” approach reviewed annually.