94 | II Série A - Número: 007S2 | 2 de Outubro de 2008

a) Aircraft stores taken on board in the territory of either Party, within limits fixed by the authorities of one Party, and for use on board outbound aircraft engaged in international air services by the designated airlines of the other Party; b) Spare parts and regular equipment entered into the territory of either Party for the maintenance or repair of aircraft used on international air services by the designated airlines of the other Party; c) Fuel lubricants and other consumable technical supplies destined to supply outbound aircraft operated on international air services by the designated airlines of the other Party, even when these supplies are to be used on the part of the flight performed over the territory of the Party in which they are taken aboard.

3. All materials referred to in paragraph 2 of this Article may be required to be kept under the supervision or control of the customs authorities.
4. The regular airborne equipment, as well as the materials and supplies retained on board the aircraft of the designated airlines of either Party, may be unloaded in the territory of the other Party only with the approval of the customs authorities of that Party. In such case, they may be placed under the supervision of the said authorities up to such time as they are re-exported or otherwise disposed of in accordance with customs regulations.
5. The exemptions provided for by this Article shall also be available in situations where the designated airlines of either Party have entered into arrangements with another airline or airlines for the loan or transfer in the territory of the other Party of the items specified in paragraphs 1 and 2 of this Article, provided such other airline or airlines similarly enjoy such exemptions from the other Party.
6. Nothing in this Agreement shall prevent the Portuguese Republic from imposing, on a non-discriminatory basis, taxes, levies, duties, fees or charges on fuel supplied in its territory for use in an aircraft of a designated airline of Ukraine that operates between a point in the territory of the Portuguese Republic and another point in the territory of the Portuguese Republic or in the territory of another European Community Member State.

Article 7 User charges

1. Each Party may impose or permit to be imposed just and reasonable charges for the use of airports, other facilities and air services under its control.
2. Neither Party shall impose or permit to be imposed upon the designated airlines of the other Party user charges higher than those imposed on its own airlines engaged in similar international air services.
3. Such charges shall be just and reasonable and shall be based on sound economic principles.
4. Each Party shall encourage consultations between airports and/or air navigation service providers and the designated airlines, using the services and facilities, and, as far as possible through the airlines’ representative organizations. Reasonable notice of any proposals for changes in user charges shall be given to users to enable them to express their views before changes are made.

Article 8 Direct transit

Traffic in direct transit across the territory of either Party and not leaving the area of the airport reserved for such purpose shall, except in respect of security measures against the threat of unlawful interference, such as violence and air piracy and measures for the combat of illicit drug traffic, be subject to no more than a simplified control. Baggage and cargo in direct transit shall be exempted from custom duties, charges and other similar taxes.

Article 9 Recognition of certificates and licences

1. Certificates of airworthiness, certificates of competency and licences issued or rendered valid by one Party and still in force, shall be recognized as valid by the other Party for the purpose of operating the agreed