{
  "url": "https://openlegislation.uk/eu-regulation-2014-1321/annex-I/division-1/section-A/division-subpart+e/division-m.a.502",
  "json_url": "https://openlegislation.uk/eu-regulation-2014-1321/annex-I/division-1/section-A/division-subpart+e/division-m.a.502.json",
  "legislation": "eur/2014/1321",
  "legislation_title": "Commission Regulation (EU) No 1321/2014 of 26 November 2014 on the continuing airworthiness of aircraft and aeronautical products, parts and appliances, and on the approval of organisations and personnel involved in these tasks (Recast) (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2014-1321",
  "path": "annex/I/division/1/section/A/division/subpart+e/division/m.a.502",
  "kind": "division",
  "number": "M.A.502",
  "heading": "Component maintenance",
  "text": "(a) The maintenance of components other than the components referred to in points (b)(2) to (b)(6) of point 21.A.307 of Annex I (Part 21) to Regulation (EU) No 748/2012 must be performed by maintenance organisations approved in accordance with Subpart F of this Annex or with Annex II (Part-145) or with Annex Vd (Part-CAO), as applicable.\n(b)By way of derogation from point (a), where a component is fitted to the aircraft, the maintenance of such component may be performed by an aircraft maintenance organisation approved in accordance with Subpart F of this Annex, Annex II (Part-145) or Annex Vd (Part-CAO) or by certifying staff referred to in point M.A.801(b)(1). Such maintenance must be performed in accordance with aircraft maintenance data or in accordance with component maintenance data if agreed by the CAA. Such aircraft maintenance organisation or certifying staff may temporarily remove the component for maintenance if this is necessary to improve access to the component, except where additional maintenance is required due to the removal. Component maintenance performed in accordance with this point is not eligible for the issuance of a CAA Form 1 and is subject to the aircraft release requirements provided for in point M.A.801.\n(c)By way of derogation from point (a), where a component is fitted to the engine or auxiliary power unit (‘APU’), the maintenance of such component may be performed by an engine maintenance organisation approved in accordance with Subpart F of this Annex, Annex II (Part-145) or Annex Vd (Part-CAO). Such maintenance must be performed in accordance with engine or APU maintenance data or in accordance with component maintenance data if agreed by the CAA. An engine maintenance organisation may temporarily remove the component for maintenance if this is necessary to improve access to the component, except where additional maintenance is required due to the removal.\nPoints (a) to (c) above do not apply to components referred to in point (c) of point 21.A.307 of Annex I (Part-21) to Regulation (EU) No 748/2012.\n(d)Maintenance of components referred to in point (b)(2) of point 21.A.307 of Annex I (Part 21) to Regulation (EU) No 748/2012, where the component is fitted to the aircraft or is temporarily removed to improve access, must be performed by an aircraft maintenance organisation approved in accordance with Subpart F of this Annex, Annex II (Part-145) or Annex Vd (Part-CAO), as applicable, by certifying staff referred to in point (b)(1) of point M.A.801 or by the pilot-owner referred to in point (b)(2) of point M.A.801. Component maintenance performed in accordance with this point is not eligible for the issuance of a CAA Form 1 and is subject to the aircraft release requirements provided for in point M.A.801.\n(e)Maintenance of components referred to in points (b)(3) to (b)(6) of point 21.A.307 of Annex I (Part 21) to Regulation (EU) No 748/2012 must be performed by either the organisation referred to in point (a), or, if performed by a different person or organisation, that person or organisation must issue a “declaration of maintenance accomplished” in accordance with point (f).\n(f)The “declaration of maintenance accomplished” must include basic details of the maintenance carried out, the date on which the maintenance was completed, and the name of the organisation or person that issued it. It will be considered a maintenance record and equivalent to a CAA Form 1 in respect of the maintained component.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Implementing Regulation (EU) 2019/1383 of 8 July 2019 amending and correcting Regulation (EU) No 1321/2014 as regards safety management systems in continuing airworthiness management organisations and alleviations for general aviation aircraft concerning maintenance and continuing airworthiness management (Text with EEA relevance)."
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Annex 1 point M.A.502 substituted (1.12.2025) by The Aviation Safety (Amendment) Regulations 2025 (S.I. 2025/1150), regs. 1(2), 2(2)(c)(ii)"
    },
    {
      "type": "X",
      "label": "X1",
      "text": "Substituted by Corrigendum to Commission Implementing Regulation (EU) 2019/1383 of 8 July 2019 amending and correcting Regulation (EU) No 1321/2014 as regards safety management systems in continuing airworthiness management organisations and alleviations for general aviation aircraft concerning maintenance and continuing airworthiness management (Official Journal of the European Union L 228 of 4 September 2019)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2014/1321/annex/I/division/1/section/A/division/subpart+e/division/m.a.502",
    "retrieved_at": "2026-11-01T14:47:03.190425+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}