The objective of the follow-up audit was to report on the action taken by the Australian Customs Service to address the recommendations of the 1996 Audit Report. The audit also reviewed key areas of the Passenger Movement Charge administration identified in the 1996 audit, including the appropriateness of formal arrangements between the ACS and Regular Public Transport airlines and assessed the proposed arrangements being developed by the ACS. The arrangements with RPT airlines were a particular focus in the follow-up report (as they were in the 1996 Audit Report), because of the significance of that category of carrier in revenue terms