36 6. This Protocol shall apply to measures affecting: (a) aircraft repair and maintenance services; (b) the selling and marketing of air transport services; and (c) computer reservation system (CRS) services. PART III OBJECTIVES Article 3 Objectives 1. The principal objective of this Protocol is to support the objectives of the AfCFTA, as set out in Article 3 of the Agreement particularly to create a single liberalised market for trade in services. 2. The specific objectives of this Protocol are to: (a) enhance competitiveness of services through: economies of scale, reduced business costs, enhanced continental market access, and an improved allocation of resources including the development of trade-related infrastructure; (b) promote sustainable development in accordance with the Sustainable Development Goals (SDGs); (c) foster domestic and foreign investment; (d) accelerate efforts on industrial development to promote the development of regional value chains; (e) progressively liberalise trade in services across the African continent on the basis of equity, balance and mutual benefit, by eliminating barriers to trade in services; (f) ensure consistency and complementarity between liberalisation of trade in services and the various Annexes in specific services sectors; (g) pursue services trade liberalisation in line with Article V of the GATS by expanding the depth and scope of liberalisation and increasing, improving and developing the export of services, while fully preserving the right to regulate and to introduce new regulations;