{
  "url": "https://openlegislation.uk/eu-regulation-2014-1321/annex-III/division-66.1/section-B/division-subpart+b/division-66.b.125",
  "json_url": "https://openlegislation.uk/eu-regulation-2014-1321/annex-III/division-66.1/section-B/division-subpart+b/division-66.b.125.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/III/division/66.1/section/B/division/subpart+b/division/66.b.125",
  "kind": "division",
  "number": "66.B.125",
  "heading": "Procedure for the conversion of licences including group ratings",
  "text": "(a)Individual aircraft type ratings already endorsed on the aircraft maintenance licence referred to in point 4 of Article 5 shall remain on the licence and shall not be converted to new ratings unless the licence holder fully meets the requirements for endorsement defined in point 66.A.45 of this Annex (Part-66) for the corresponding group/sub-group ratings.\n(b)The conversion shall be performed in accordance with the following conversion table:\n1..for category B1 or C:\nhelicopter piston engine, full group: converted to ‘ full subgroup 2c ’ plus the aircraft type ratings for those single piston engine helicopters which are in Group 1;\nhelicopter piston engine, manufacturer group: converted to the corresponding ‘ manufacturer subgroup 2c ’ plus the aircraft type ratings for those single piston engine helicopters of that manufacturer which are in Group 1;\nhelicopter turbine engine, full group: converted to ‘ full subgroup 2b ’ plus the aircraft type ratings for those single turbine engine helicopters which are in Group 1;\nhelicopter turbine engine, manufacturer group: converted to the corresponding ‘ manufacturer subgroup 2b ’ plus the aircraft type ratings for those single turbine engine helicopters of that manufacturer which are in Group 1;\naeroplane single piston engine — metal structure, either full group or manufacturer group: converted to ‘ full group 3 ’ . For the B1 licence, the following limitations shall be included: composite-structure aeroplanes, wooden-structure aeroplanes, and metal-tubing and fabric aeroplanes;\naeroplane multiple piston engines — metal structure, either full group or manufacturer group: converted to ‘ full group 3 ’ plus the aircraft type ratings for those aeroplanes with multiple piston engines of the corresponding full/manufacturer group which are in Group 1. For the B1 licence, the following limitations shall be included: composite-structure aeroplanes, wooden-structure aeroplanes and metal-tubing and fabric aeroplanes;\naeroplane single piston engine — wooden structure, either full group or manufacturer group: converted to ‘ full group 3 ’ . For the B1 licence, the following limitations shall be included: pressurised aeroplanes, metal-structure aeroplanes, composite-structure aeroplanes and metal-tubing and fabric aeroplanes;\naeroplane multiple piston engines — wooden structure, either full group or manufacturer group: converted to ‘ full group 3 ’ . For the B1 licence, the following limitations shall be included: pressurised aeroplanes, metal-structure aeroplanes, composite-structure aeroplanes and metal-tubing and fabric aeroplanes;\naeroplane single piston engine — composite structure, either full group or manufacturer group: converted to ‘ full group 3 ’ . For the B1 licence, the following limitations shall be included: pressurised aeroplanes, metal-structure aeroplanes, wooden-structure aeroplanes and metal-tubing and fabric aeroplanes;\naeroplane multiple piston engines — composite structure, either full group or manufacturer group: converted to ‘ full group 3 ’ . For the B1 licence, the following limitations shall be included: pressurised aeroplanes, metal-structure aeroplanes, wooden-structure aeroplanes and metal-tubing and fabric aeroplanes;\naeroplane turbine — single engine, full group: converted to ‘ full sub-group 2a ’ plus the aircraft type ratings for those single turboprop aeroplanes which did not require an aircraft type rating in the previous system and are in Group 1;\naeroplane turbine — single engine, manufacturer group: converted to the corresponding ‘ manufacturer subgroup 2a ’ plus the aircraft type ratings for those single turboprop aeroplanes of that manufacturer which did not require an aircraft type rating in the previous system and are in Group 1;\naeroplane turbine — multiple engines, full group: converted to the aircraft type ratings for those aeroplanes with multiple turboprop engines which did not require an aircraft type rating in the previous system.\n2..for category B2:\naeroplane: converted to ‘full sub-group 2a’ and ‘full group 3’, plus the aircraft type ratings for those aeroplanes which did not require an aircraft type rating in the previous system and are in group 1,\nhelicopter: converted to ‘full sub-groups 2b and 2c’, plus the aircraft type ratings for those helicopters which did not require an aircraft type rating in the previous system and are in group 1;\n3..for category C:\naeroplane: converted to ‘full sub-group 2a’ and ‘full group 3’, plus the aircraft type ratings for those aeroplanes which did not require an aircraft type rating in the previous system and are in group 1,\nhelicopter: converted to ‘full sub-groups 2b and 2c’, plus the aircraft type ratings for those helicopters which did not require an aircraft type rating in the previous system and are in group 1.\n(c)If the licence was subject to limitations following the conversion process referred to in point 66.A.70, these limitations shall remain on the licence, unless they are removed under the conditions defined in the relevant conversion report referred to in point 66.B.300.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Word in Annex 3 point 66.B.120 substituted (31.12.2020) by The Aviation Safety (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/645), regs. 1, 273(6) (with Sch. 3) (as amended by S.I. 2019/1098, regs. 1(3), 12); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Substituted by Commission Regulation (EU) 2018/1142 of 14 August 2018 amending Regulation (EU) No 1321/2014 as regards the introduction of certain categories of aircraft maintenance licences, the modification of the acceptance procedure of components from external suppliers and the modification of the maintenance training organisations' privileges (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2014/1321/annex/III/division/66.1/section/B/division/subpart+b/division/66.b.125",
    "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."
}