The Air Navigation Order 2005

Issue etc. of certificates of validation of permits to fly or equivalent documents

13.—(1) The CAA shall issue in respect of any aircraft registered elsewhere than in the United Kingdom a certificate of validation if it is satisfied that there is in respect of the aircraft a permit to fly or equivalent document issued or validated by the competent authority of the country in which the aircraft is registered which applies standards which are substantially equivalent to those required for the issue of a permit to fly by the CAA.

(2) An aircraft flying in accordance with a certificate of validation shall not fly for the purpose of public transport or aerial work other than aerial work which consists of flights for the purpose of flying displays, associated practice, test and positioning flights or the exhibition or demonstration of the aircraft.

(3) The CAA may issue a certificate of validation subject to such other conditions relating to the airworthiness, operation or maintenance of the aircraft as it thinks fit.