Airservices Australia v Canadian Airlines International Ltd

Airservices Australia and Canadian Airlines International Ltd were the parties involved in this dispute before the High Court of Australia. The core of the disagreement concerned charges levied by the Civil Aviation Authority (CAA) for the use of its services and facilities. Canadian Airlines contended that these charges were not reasonably related to the expenses incurred by the CAA in providing those services and facilities, and that certain charges amounted to unlawful taxation.

The High Court was required to determine several legal issues. These included whether the charges imposed by the CAA were reasonably related to the expenses incurred in providing specific services and facilities, or if the charges could be aggregated. The court also had to consider whether the imposition of statutory liens on leased aircraft for unpaid lessee charges, which lessors were then required to discharge, constituted an acquisition of property otherwise than on just terms under the Constitution. Furthermore, the court was asked to determine if the statutory scheme for user charges, which might involve indirect subsidies between different users, amounted to the imposition of taxation.

The High Court's reasoning, as indicated by the initial proceedings in the Federal Court, focused on whether the CAA had properly cost-justified its charges by relating them to the expenses of providing particular services. The respondents argued that the charges, such as terminal navigation charges, rescue and fire fighting services, and en route charges, were not demonstrably linked to the actual costs incurred by the CAA, particularly given variations in expenses between different aerodromes and routes, and the basis of calculation (e.g., MTOW, distance flown). The court considered the interpretation of the relevant legislation and the principles of statutory construction when two alternative interpretations are available.

The High Court ultimately adjourned the further hearing of the appeal, directing the parties to file short minutes of the orders they contended should be made and to provide written submissions concerning those orders, in the absence of agreement.