e) airline operational planning, which may include standardisation of equipment to facilitate work and service exchange so as to benefit from economies of scale, standardisation of procedures, fleet sharing, joint scheduling, code sharing, joint market promotion, joint use of facilities for maintenance, marketing, product sales, training, joint fuel purchases, joint insurance and pooling and sourcing of spares; f) the establishment of an aircraft leasing facility within the SADC; g) human resource development in the civil aviation sector within the SADC; h) improved cost-effectiveness of aircraft maintenance and the enhanced provision of safe air services, which may include (i) common rules for the regulation of the licensing of aircraft maintenance organisations; (ii) the building of capacity to support the establishment of aircraft maintenance organisations and co-ordinated planning; and (iii) the development of aircraft maintenance organisations; i) safe and cost-effective airspace management, which may include (i) the development of common approaches for the provision of efficient civil aviation communication infrastructure and services; (ii) co-operation with a view to the early implementation of the ICAO Africa and Indian Ocean Flight Information Plans; (iii) support for the relevant efforts of ICAO and AFCAC: and j) search and rescue. 4. For the purposes of this Article, Member States agree to encourage the development of distinct roles for owners, boards and management of the SADC airlines. ARTICLE 9.4 ICAO STANDARDS AND RECOMMENDED PRACTICES 1. Member States, recognising that co-operation is indispensable to the realisation of the national, regional, continental and international objectives of the civil aviation sector, shall ensure compliance with ICAO Standards in accordance with the Convention on International Civil Aviation, 1944, and shall encourage compliance with ICAO Recommended Practices. 2. For the purposes of attaining the objective set out in paragraph 1, Member States agree to establish co-operative means and develop regional strategies for complying with ICAO Standards in accordance with the Convention on International Civil Aviation, 1944, and ICAO Recommended Practices. 3. Member States shall encourage recognition of each other's licences and certificates of airworthiness, provided they comply with ICAO SARPs.