{
  "url": "https://openlegislation.uk/eu-regulation-2012-748/annex-I/section-A/division-subpart+d/division-21.a.91",
  "json_url": "https://openlegislation.uk/eu-regulation-2012-748/annex-I/section-A/division-subpart+d/division-21.a.91.json",
  "legislation": "eur/2012/748",
  "legislation_title": "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)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2012-748",
  "path": "annex/I/section/A/division/subpart+d/division/21.a.91",
  "kind": "division",
  "number": "21.A.91",
  "heading": "Classification of changes to a type-certificate",
  "text": "Changes to a type-certificate are classified as minor and major. A ‘ minor change ’ has no appreciable effect on the mass, balance, structural strength, reliability, operational characteristics, operational suitability data, or other characteristics affecting the airworthiness of the product or its environmental characteristics. Without prejudice to point 21.A.19, all other changes are ‘ major changes ’ under this Subpart. Major and minor changes shall be approved in accordance with points 21.A.95 or 21.A.97, as appropriate, and shall be adequately identified.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Delegated Regulation (EU) 2019/897 of 12 March 2019 amending Regulation (EU) No 748/2012 as regards the inclusion of risk-based compliance verification in Annex I and the implementation of requirements for environmental protection (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2012/748/annex/I/section/A/division/subpart+d/division/21.a.91",
    "retrieved_at": "2026-11-01T14:49:15.996010+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."
}