{
  "url": "https://openlegislation.uk/eu-regulation-2014-1321/annex-I/division-1/section-A/division-subpart+c/division-m.a.304",
  "json_url": "https://openlegislation.uk/eu-regulation-2014-1321/annex-I/division-1/section-A/division-subpart+c/division-m.a.304.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+c/division/m.a.304",
  "kind": "division",
  "number": "M.A.304",
  "heading": "Data for modifications and repairs",
  "text": "A person or organisation repairing an aircraft or a component, shall assess any damage. Modifications and repairs shall be carried out using, as appropriate, the following data:\n(a) approved by the CAA;\n(b) approved by a design organisation complying with Annex I (Part-21) to Regulation (EU) No 748/2012;\n(c) contained in the requirements referred to in point 21.A.90B or 21.A.431B of Annex I (Part-21) to Regulation (EU) No 748/2012.",
  "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": "Word in Annex 1 point M.A.304 substituted (31.12.2020) by The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 248(4) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "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+c/division/m.a.304",
    "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."
}