# The Air Navigation Order 2000, Paragraph 6: Period of experience


A certificate of experience shall not be valid unless the experience was gained within the period of 13 months preceding the signing of the certificate in the case of Cases A, E and F, or 6 months preceding the signing of the certificate in the case of Case D.

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Source: https://www.legislation.gov.uk/uksi/2000/1562/schedule/8/paragraph/6 (the official version)
Page: https://openlegislation.uk/air-navigation-order-2000/schedule-8/paragraph-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.