# The Air Navigation Order 2000, Article 25: Maintenance of privileges of other ratings


(1) A person shall not be entitled to perform the functions to which a flying instructor’s rating (gyroplanes), an assistant flying instructor’s rating (gyroplanes) or an instrument meteorological conditions rating (aeroplanes) relates unless his licence bears a valid certificate of test, which certificate shall be appropriate to the functions to which the rating relates in accordance with Section 1 of Part C of Schedule 8 to this Order and shall otherwise comply with that Part.
(2) A person shall not be entitled to perform the functions to which an instrument rating or an instructor’s rating (other than a flying instructor’s rating (gyroplanes) or an assistant flying instructor’s rating (gyroplanes)) relates unless his licence bears a valid certificate of revalidation, which certificate shall be appropriate to the functions to which the rating relates in accordance with Section 2 of Part C of the said Schedule and shall otherwise comply with that Part.

---
Source: https://www.legislation.gov.uk/uksi/2000/1562/article/25 (the official version)
Page: https://openlegislation.uk/air-navigation-order-2000/article-25
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.