61 STAT.] SOUTH AFRICA-AIR TRANSPORT SERVICES-MAY 23, 1947 shall not be higher than would be paid for the use of such airports and facilities by its national aircraft employed in similar international air services. (B) Fuel, lubricating oils and spare parts introduced into, or taken on board aircraft in the territory of one contracting party by, or on behalf of, any designated air carrier of the other contracting party and intended solely for use by the aircraft of such carrier shall be accorded, with respect to customs duties, inspection fees and other charges im- posed by the former contracting party, treatment not less favourable than that granted to national air carriers engaged in international air services or such carriers of the most favoured nation. (C) Aircraft of the designated airline of one contracting party op- erating on the agreed services on a flight to, from or across the territory of the other contracting party shall be admitted temporarily free from customs duties subject otherwise to the customs regulations of such other contracting party. Supplies of fuel, lubricating oils, spare parts, regular equipment and aircraft stores retained on board aircraft of any designated air carrier of one contracting party shall be exempt in the territory of the other contracting party from customs duties, inspec- tion fees or similar duties or charges, even though such supplies be used by such aircraft on flights within that territory. ARTICLE IV. Certificates of airworthiness, certificates of competency and licences issued or rendered valid by one contracting party and still in force shall be recognized as valid by the other contracting party for the purpose of operation of the agreed services. Each contracting party reserves the right, however, to refuse to recognize for the purpose of flight above its own territory, certificates of competency and licences granted to its own nationals by another state. ARTICLE V. (A) The laws and regulations of one contracting party relating to the admission to or departure from its territory of aircraft engaged in international air navigation, or to the operation and navigation of such aircraft while within its territory, shall be applied to the aircraft of the other contracting party, and shall be complied with by such aircraft upon entering or departing from or while within the territory of the first party. (B) The laws and regulations of each contracting party as to the admission to, sojourn in and departure from its territory of passengers, crew and cargo of aircraft, such as regulations relating to entry, clearance, immigration, passports, customs and quarantine, shall be observed. ARTICLE VI. Each contracting party reserves the right to withhold or revoke a certificate or permit to an air carrier designated by the other contract- ing party in the event that it is not satisfied that substantial ownership and effective control of such carrier are vested in nationals of the other contracting party, or in case of failure by that carrier to comply with Certificates of air- worthiness, etc. .l \'aw
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reeIa- ti(ons. Withholding or rev- ocation of certificate or permit. 3059
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