# Commission Regulation (EU) No 139/2014 of 12 February 2014 laying down requirements and administrative procedures related to aerodromes pursuant to Regulation (EC) No 216/2008 of the European Parliament and of the Council (Text with EEA relevance), Division (d): Records shall be kept for a minimum of five years, except that the below records shall be kept as follows:

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

(1)the aerodrome certification basis, the alternative means of compliance in use and the current aerodrome or aerodrome operator certificate(s), for the lifespan of the certificate;
(2)arrangements with other organisations, for as long as such arrangements are in effect;
(3)manuals of aerodrome equipment or systems employed at the aerodrome, for as long as they are used at the aerodrome;
(4)safety assessment reports for the lifetime of the system/procedure/activity;
(5)personnel training, qualifications, and medical records as well as their proficiency checks, as appropriate, for at least four years after the end of their employment, or until the area of their employment has been audited by the CAA; and
(6)the current version of the hazard register.

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Source: https://www.legislation.gov.uk/eur/2014/139/annex/III/division/4/division/10/division/d (the official version)
Page: https://openlegislation.uk/eu-regulation-2014-139/annex-III/division-4/division-10/division-d
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.