# Commission Regulation (EU) No 748/2012 of 3 August 2012 laying down implementing rules for the airworthiness and environmental certification of aircraft and related products, parts and appliances, as well as for the certification of design and production organisations (recast) (Text with EEA relevance), Division 21.A.451: Obligations and UKPA marking

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

(a)Each holder of a major repair design approval shall:
1..undertake the obligations:
(i)laid down in points 21.A.3A, 21.A.3B, 21.A.4, 21.A.5 to 21.A.8, 21.A.439, 21.A.441 and 21.A.443;
(ii)implicit in the collaboration with the type-certificate, supplemental type-certificate and with the APU UKTSO authorisation holder under point 21.A.433 (b), as appropriate.
2..specify the marking, including UKPA letters, in accordance with point 21.A.804(a).
(b)Except for type-certificate holders or APU authorisation holders for which point 21.A.44 applies, the holder of a minor repair design approval shall:
1..undertake the obligations laid down in points 21.A.4, 21.A.5 and 21.A.7; and
2..specify the marking, including UKPA letters, in accordance with point 21.A.804(a).

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Source: https://www.legislation.gov.uk/eur/2012/748/annex/I/section/A/division/subpart+m/division/21.a.451 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-748/annex-I/section-A/division-subpart+m/division-21.a.451
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.