1354 Prevention of dis- crimination, etc. Laws and regula- tions applicable. Eight reserved to withhold or revoke certificate or permit. INTERNATIONAL AGREEMENTS OTHER THAN TREATIES [59 STAT. Article IV In order to prevent discriminatory practices and to ensure equality of treatment, the Governments agree that: (a) Each of them may impose or permit to be imposed on airlines of the other state just and reasonable charges for the use of public airports and other facilities on its territory provided that these charges shall not be higher than would be paid for the use of such airports and facilities by its national aircraft engaged in similar international services; (b) Fuel and oil, aircraft stores, spare parts and equipment intro- duced into the territory of one state by the other state or by nationals of the other state, and intended solely for use by air- craft of such other state shall be accorded national and most- favoured-nation treatment with respect to the imposition of customs and excise duties and taxes, inspection fees or other national duties or charges by the state whose territory is en- tered: provided, however, that such state may require that such imported materials shall be kept under customs supervision and control; (c) The fuel and oil, aircraft stores, spare parts and equipment retained on board civil aircraft of the airlines authorized to operate the routes and services described in the Annex shall, upon arriving in or leaving the territory of the other state, be exempt from the imposition of customs and excise duties and taxes, inspection fees or other national duties or charges, even though such supplies be used or consumed by such aircraft on flights in that territory; (d) Neither of them will give a preference to its own airlines against the airlines of the other state in the application of its customs, immigration, quarantine and similar regulations or in the use of airports, airways or other facilities. Article V The laws and regulations of each state 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 state, and shall be complied with by such aircraft, upon entering or departing from or while within the territory of that state. Article VI Each Government reserves the right to withhold or revoke a certifi- cate or permit to an airline of the other state in any case where it is not satisfied that substantial ownership and effective control are vested in nationals of that state, or in case of failure of an airline to comply with the laws of the state over which it operates, as described in Arti- cle V, or to perform its obligations under this Agreement.
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