# The Air Navigation Order 2016, Article 56: Extension of a national airworthiness review certificate of an aircraft in a controlled environment

Extent: E+W+S+N.I.

(1) The validity of a national airworthiness review certificate of an aircraft in a controlled environment may be extended by the continuing airworthiness management organisation which is managing the airworthiness of the aircraft.
(2) The continuing airworthiness management organisation may extend the validity of a national airworthiness review certificate on a maximum of two occasions, for a period of 12 months on each occasion.
(3) A national airworthiness review certificate may be extended only when the continuing airworthiness management organisation which is to extend it is satisfied that it is proper to do so.

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Source: https://www.legislation.gov.uk/uksi/2016/765/article/56 (the official version)
Page: https://openlegislation.uk/air-navigation-order-2016/article-56
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.