AIR NAVIGATION-UNION OF SOUTH AFRICA. ARTIOLE 11 Upon the departure or landing of any aircraft each ~~rty may within its own territory and through its competent authonbes search the aircraft of the other Party and examine the certificates and other documents prescribed. ARTIOLE 12 Aerodromes open to public air traffic in the territory of one of the Parties to thIS arrangement shall in so far as they are under the control of the Party in whose territory they are situated be open to all aircraft of the other Party, WhICh shall also be entitled to the assistance of the meteorological services, the wireless services, the lighting services and the day and night signalling services, in so far as the several classes of services are under the control of the Party in whose territory they respectively are rendered. Any scale of charges made, namely, landing, accommodation or other charge, with respect to the aircra t of each Party in the territory of the other Party, shall in so far as such charges are under the control of the Party in whose territory they are made be the same for the aircraft of both Parties. ARTICLE 13 All aircraft entering or leaving the territory of either of the Parties to this arrangement shall land at or depart from an aero- drome open to public air traffic and classed as a customs aerodrome at which facilitIes exist for enforcement of immigration regUlations and clearance of aircraft, and no intermediary landing shall be ef- fected between the frontier and the aerodrome. In special cases the competent authorities may allow aircraft to land at or depart from other aerodromes, at which customs: immigration and clearance facilities have been arranged. The prohIbition of any intermediary landing applies also in such cases. In the event of a forced landing outside the aerodromes, referred to in the first paragraph- of this article, the pilot of the aircraft, its crew and the passengers shall conform to the customs and immi- gration regulations in force in the territory in which the landing has been made. Aircraft of each Party to this arrangement are accorded the right to enter the territory of the other Party subject to compliance with quarantine regulations in force therein. The Parties to this arrangement shall exchange lists of the aero- dromes in their territories designated by them as ports of entry and departure. ARTICLE 14 Each of the Parties to this arrangement reserves the right to require that all aircraft crossing the frontiers of its territory shall do so between certain points. Subject to the notification of any such requirements by one Party to the other Party and to the right to prohibit air traffic over certain areas as stipulated in Article 6, the frontiers of the territories of the Parties to this arrangement may be crossed at any point. ARTICLE 15 1831 Inspection, etc. Aerodromes. etc. Landings. etc. Flight restrietions. AI!. ballast, only fine sand or water may be dropped from an Ballast. aircraft. ARTICLE 16 No article or substance, other than ballast, may be unloaded or Unloading permits. otherwise discharged in the course of fli~ht unless special permis- sion for such purpose shall have been gIven by the authonties of the territory in which such unloading or discharge takes place.
