Artikel 11

1. Aircraft and boats admitted under cover of temporary importation papers may be used, for their private use, by third persons duly authorized by the holders of the papers, provided that those third persons normally reside outside the country of importation and also fulfil the other conditions laid down in this Convention. The Customs authorities of the Contracting Parties shall have the right to require evidence that such third persons have been duly authorized by the holders of the papers and fulfil the aforesaid conditions. If this evidence does not appear sufficient, the Customs authorities may refuse use of these aircraft and boats in their country under cover of the papers. In the case of aircraft or boats which have been hired, each Contracting Party may require that the person taking the aircraft or boat on hire be present at the time of importation of the aircraft or boat.
2. Notwithstanding the provisions of the preceding paragraph, the Customs authorities of the Contracting Parties may permit, under conditions of which they shall be the sole judges, an aircraft or boat circulating under cover of temporary importation papers to be manned by a crew composed of persons who are normally resident in the country of importation, in particular when the crew of the aircraft or boat acts on behalf of or under instructions from the holder of the temporary importation papers.