Artikel 4

1. Aircraft operated on international services by the designated airlines of either Contracting Party, as well as their regular equipment, spare parts, supplies of fuels and lubricants, and aircraft stores (including food, beverages and tobacco) on board such aircraft shall be exempt from all customs duties, inspection fees and other duties or taxes on arriving in the territory of the other Contracting Party, provided such equipment and supplies remain on board the aircraft up to such time as they are re-exported.
2. Supplies of fuels, lubricants, spare parts, regular equipment and aircraft stores introduced into the territory of one Contracting Party by or on behalf of a designated airline of the other Contracting Party or taken on board the aircraft operated by such designated airline and intended solely for use in the operation of international services shall be exempt from all national duties and charges, including customs duties and inspection fees imposed in the territory of the first Contracting Party, even when these supplies are to be used on the parts of the journey performed over the territory of the Contracting Party in which they are taken on board.
The materials referred to above may be required to be kept under customs supervision or control.
3. The regular airborne equipment, spare parts, aircraft stores and supplies of fuels and lubricants retained on board the aircraft of either Contracting Party may be unloaded in the territory of the other Contracting Party only with the approval of the customs authorities of that Party, who may require that those materials be placed under their supervision up to such time as they are re-exported or otherwise disposed of in accordance with customs regulations.