--- title: "Part-147 Obligations — What Each Rule Requires · Avioverse" description: "93 obligations in Annex IV (Part-147) of Regulation (EU) No 1321/2014: who must do what and when, each pinned to the exact sentence of the rule." url: "https://avioverse.aero/obligations/part-147" --- Obligations · Annex IV # Part-147 obligations Approval of organisations that train and examine for Part-66 aircraft maintenance licences. 93 obligations from 22 rules 70 must · 20 may · 3 must not Checked against the text in force on 2 Nov 2026 Show what applies to 93 obligations How to read this page - Must · May · Must not A duty, a permission, a prohibition — as the rule words it. - The action What to do, in plain words, with the rule's own terms kept. - If, When, For … The condition or exception that limits it. Check it first. - When Always (a standing condition) · On an event (something happens, or before you act) · Periodically · Once. - Time limit The deadline, interval or retention period the rule sets. - Rule text The exact sentence the obligation comes from. It is what binds; read it before relying on the summary. - Show what applies to A viewpoint, not a profile — switch it any time, or share the link. ## Subpart A — General ### 147.A.10 General 1 obligation · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-10) - Must Be an organisation or part of an organisation registered as a legal entity. - Who Training organisation - When Always Rule text 147.A.10 > A training organisation shall be an organisation or part of an organisation registered as a legal entity. 147.A.10 · Regulation (EU) No 1321/2014 · verbatim ### 147.A.15 Application 2 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-15) - Must Use the form and manner established by the competent authority. When applying for approval or a change to an existing approval. - Who Training organisation - When Once Rule text 147.A.15(a) > (a) An application for an approval or for the change of an existing approval shall be made on a form and in a manner established by the competent authority. 147.A.15(a) · Regulation (EU) No 1321/2014 · verbatim - Must Include in the application all information listed in points 147.A.15(b)(1) to 147.A.15(b)(5). When applying for approval or a change to approval. - Who Training organisation - When Once Rule text 147.A.15(b) > An application for an approval or change to an approval shall include the following information: 147.A.15(b) · Regulation (EU) No 1321/2014 · verbatim ## Subpart B — Organisational requirements ### 147.A.100 Facility requirements 13 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-100) - Must Ensure the size and structure of facilities protect against prevailing weather and allow proper operation of all planned training and examinations on any particular day. Unless the distance-learning derogation in point 147.A.100(j) applies. - Who Training organisation - When Always Rule text 147.A.100(a) > The size and structure of facilities shall ensure protection from the prevailing weather elements and proper operation of all planned training and examination on any particular day. 147.A.100(a) · Regulation (EU) No 1321/2014 · verbatim - Must Provide fully enclosed, appropriate accommodation, separate from other facilities, for theoretical training and knowledge examinations. Unless the distance-learning derogation in point 147.A.100(j) applies. - Who Training organisation - When Always Rule text 147.A.100(b) > Fully enclosed, appropriate accommodation, separate from other facilities, shall be provided for the delivery of the theoretical training and the conduct of knowledge examinations. 147.A.100(b) · Regulation (EU) No 1321/2014 · verbatim - Must Maintain the accommodation environment in point 147.A.100(b) so students can concentrate on studies or examinations without undue distraction or discomfort. Unless the distance-learning derogation in point 147.A.100(j) applies. - Who Training organisation - When Always Rule text 147.A.100(c) > The point (b) accommodation environment shall be maintained such that students are able to concentrate on their studies or examination as appropriate, without undue distraction or discomfort. 147.A.100(c) · Regulation (EU) No 1321/2014 · verbatim - Must Ensure basic training workshops and/or maintenance facilities separate from classrooms are provided for practical instruction appropriate to the planned course. For a basic training course, unless the derogation in point 147.A.100(j) applies. - Who Training organisation - When Always Rule text 147.A.100(d) > In the case of a basic training course, basic training workshops and/or maintenance facilities separate from training classrooms shall be provided for practical instruction appropriate to the planned training course. 147.A.100(d) · Regulation (EU) No 1321/2014 · verbatim - May Arrange for another organisation to provide basic training workshops and/or maintenance facilities. If unable to provide the practical training facilities required for a basic training course. - Who Training organisation - When Always Rule text 147.A.100(d) > If, however, the organisation is unable to provide such facilities, arrangements may be made with another organisation to provide such workshops and/or maintenance facilities, in which case a written agreement shall be made with such organisation specifying the conditions of access and use thereof. 147.A.100(d) · Regulation (EU) No 1321/2014 · verbatim - Must Make a written agreement specifying conditions of access and use and competent authority access to the contracted organisation. When arranging for another organisation to provide basic training workshops and/or maintenance facilities because the training organisation cannot provide them. - Who Training organisation - When On an event Rule text 147.A.100(d) > If, however, the organisation is unable to provide such facilities, arrangements may be made with another organisation to provide such workshops and/or maintenance facilities, in which case a written agreement shall be made with such organisation specifying the conditions of access and use thereof. The competent authority shall require access to any such contracted organisation and the written agreement shall specify this access. 147.A.100(d) · Regulation (EU) No 1321/2014 · verbatim - Must Provide access to appropriate facilities containing examples of aircraft type as specified in point 147.A.115(d). For an aircraft type/task training course. - Who Training organisation - When Always Rule text 147.A.100(e) > In the case of an aircraft type/task training course, access shall be provided to appropriate facilities containing examples of aircraft type as specified in point 147.A.115(d). 147.A.100(e) · Regulation (EU) No 1321/2014 · verbatim - Must not Exceed 15 students per instructor or assessor during practical training on any training course. Unless the distance-learning derogation in point 147.A.100(j) applies. - Who Training organisation - When Always Rule text 147.A.100(f) > The maximum number of students undergoing practical training during any training course shall not exceed 15 per instructor or assessor. 147.A.100(f) · Regulation (EU) No 1321/2014 · verbatim - Must Provide office accommodation allowing instructors, knowledge examiners and practical assessors to prepare for duties without undue distraction or discomfort. - Who Training organisation - When Always Rule text 147.A.100(g) > Office accommodation shall be provided for instructors, knowledge examiners and practical assessors of a standard to ensure that they can prepare for their duties without undue distraction or discomfort. 147.A.100(g) · Regulation (EU) No 1321/2014 · verbatim - Must Provide secure storage for examination and training records that keeps documents in good condition throughout the retention period specified in point 147.A.125. - Who Training organisation - When Always Rule text 147.A.100(h) > Secure storage facilities shall be provided for examination and training records. The storage environment shall be such that documents remain in good condition for the retention period as specified in point 147.A.125. 147.A.100(h) · Regulation (EU) No 1321/2014 · verbatim - May Combine storage facilities and office accommodation with adequate security. - Who Training organisation - When Always Rule text 147.A.100(h) > The storage facilities and office accommodation may be combined, subject to adequate security. 147.A.100(h) · Regulation (EU) No 1321/2014 · verbatim - Must Provide a library containing all technical material appropriate to the scope and level of training undertaken. - Who Training organisation - When Always Rule text 147.A.100(i) > A library shall be provided containing all technical material appropriate to the scope and level of training undertaken. 147.A.100(i) · Regulation (EU) No 1321/2014 · verbatim - Must Brief students and raise their awareness of the suitability of their learning location. For distance learning where the organisation has no control over the student's environment, excluding the corresponding examinations and assessments. - Who Training organisation - When On an event Rule text 147.A.100(j) > By derogation from points (a) to (d) and (f), in the case of distance learning performed at a location where the organisation approved under this Annex has no control over the environment where the student is located, the organisation approved under this Annex shall brief the student and raise their awareness regarding the suitability of their learning location. This derogation applies only to distance learning and not to the corresponding examination and/or assessment. 147.A.100(j) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.105 Personnel requirements 10 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-105) - Must Appoint an accountable manager with corporate authority to ensure all training commitments can be financed and carried out to the standard required by this Part. - Who Training organisation - When Always Rule text 147.A.105(a) > (a) The organisation shall appoint an accountable manager who has corporate authority for ensuring that all training commitments can be financed and carried out to the standard required by this Part. 147.A.105(a) · Regulation (EU) No 1321/2014 · verbatim - Must Nominate a person or group responsible for ensuring the maintenance training organisation complies with this Part. - Who Training organisation - When Always Rule text 147.A.105(b) > A person or group of persons, whose responsibilities include ensuring that the maintenance training organisation is in compliance the requirements of this Part, shall be nominated. 147.A.105(b) · Regulation (EU) No 1321/2014 · verbatim - Must Be responsible to the accountable manager for ensuring the organisation complies with this Part. For persons nominated to ensure compliance with this Part. - Who Accountable manager and nominated persons - When Always Rule text 147.A.105(b) > A person or group of persons, whose responsibilities include ensuring that the maintenance training organisation is in compliance the requirements of this Part, shall be nominated. Such person(s) must be responsible to the accountable manager. 147.A.105(b) · Regulation (EU) No 1321/2014 · verbatim - May Serve also as the accountable manager. For the senior nominated person or one person from the nominated group, if the accountable-manager requirements in point 147.A.105(a) are met. - Who Accountable manager and nominated persons - When Always Rule text 147.A.105(b) > The senior person or one person from the group of persons may also be the accountable manager subject to meeting the requirements for the accountable manager as defined in point (a). 147.A.105(b) · Regulation (EU) No 1321/2014 · verbatim - Must Contract with sufficient staff to plan and perform theoretical and practical training, conduct knowledge examinations and conduct practical assessments in accordance with the approval. For activities not covered by the derogation in point 147.A.105(d). - Who Training organisation - When Always Rule text 147.A.105(c) > (c) The maintenance training organisation shall contract with sufficient staff to plan/perform theoretical and practical training, conduct knowledge examinations and practical assessments in accordance with the approval. 147.A.105(c) · Regulation (EU) No 1321/2014 · verbatim - May Nominate the other organisation's staff to carry out practical training and assessments. When another organisation provides practical training and assessments, by derogation from point 147.A.105(c). - Who Training organisation - When Always Rule text 147.A.105(d) > (d) By derogation to point (c), when another organisation is used to provide practical training and assessments, such other organisation's staff may be nominated to carry out practical training and assessments. 147.A.105(d) · Regulation (EU) No 1321/2014 · verbatim - May Carry out any combination of instructor, examiner and assessor roles. If point 147.A.105(f) is complied with. - Who Instructors, examiners and assessors - When Always Rule text 147.A.105(e) > (e) Any person may carry out any combination of the roles of instructor, examiner and assessor, subject to compliance with point (f). 147.A.105(e) · Regulation (EU) No 1321/2014 · verbatim - Must Establish the experience and qualifications of instructors, knowledge examiners and practical assessors in accordance with published criteria, or in accordance with a procedure and to a standard agreed by the competent authority. - Who Training organisation - When Always Rule text 147.A.105(f) > (f) The experience and qualifications of instructors, knowledge examiners and practical assessors shall be established in accordance with criteria published or in accordance with a procedure and to a standard agreed by the competent authority. 147.A.105(f) · Regulation (EU) No 1321/2014 · verbatim - Must Specify knowledge examiners and practical assessors in the organisation exposition for acceptance of those staff. - Who Training organisation - When Always Rule text 147.A.105(g) > (g) The knowledge examiners and practical assessors shall be specified in the organisation exposition for the acceptance of such staff. 147.A.105(g) · Regulation (EU) No 1321/2014 · verbatim - Must Undergo updating training relevant to current technology, practical skills, human factors and the latest training techniques appropriate to the knowledge trained or examined. For instructors and knowledge examiners. - Who Instructors, examiners and assessors - When Periodically - Time limit at least every 24 months Rule text 147.A.105(h) > (h) Instructors and knowledge examiners shall undergo updating training at least every 24 months relevant to current technology, practical skills, human factors and the latest training techniques appropriate to the knowledge being trained or examined. 147.A.105(h) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.110 Records of instructors, examiners and assessors 2 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-110) - Must Maintain records of all instructors, knowledge examiners and practical assessors, reflecting experience, qualifications, training history and subsequent training undertaken. - Who Training organisation - When Always Rule text 147.A.110(a) > The organisation shall maintain a record of all instructors, knowledge examiners and practical assessors. These records shall reflect the experience and qualification, training history and any subsequent training undertaken. 147.A.110(a) · Regulation (EU) No 1321/2014 · verbatim - Must Draw up terms of reference for all instructors, knowledge examiners and practical assessors. - Who Training organisation - When Always Rule text 147.A.110(b) > Terms of reference shall be drawn up for all instructors, knowledge examiners and practical assessors. 147.A.110(b) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.115 Instructional equipment 7 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-115) - Must Equip each classroom with appropriate presentation equipment so students can easily read presentation text, drawings, diagrams and figures from any position. - Who Training organisation - When Always Rule text 147.A.115(a) > Each classroom shall have appropriate presentation equipment of a standard that ensures that students can easily read presentation text, drawings, diagrams and figures from any position in the classroom. 147.A.115(a) · Regulation (EU) No 1321/2014 · verbatim - Must Design training content to assist understanding of the subject matter and ensure students can easily read presentation text, drawings, diagrams and figures. For virtual training environments. - Who Training organisation - When Always Rule text 147.A.115(a) > For virtual training environments, the training content shall be designed in such a way to assist students in their understanding of the particular subject matter, ensuring that students can easily read presentation text, drawings, diagrams and figures. 147.A.115(a) · Regulation (EU) No 1321/2014 · verbatim - May Include representative maintenance simulation training devices (MSTDs) in presentation equipment to assist understanding of the subject matter. If the devices are considered beneficial for this purpose. - Who Training organisation - When Always Rule text 147.A.115(a) > The presentation equipment may include representative maintenance simulation training devices (MSTDs) to assist students in their understanding of the particular subject matter where such devices are considered beneficial for such purposes. 147.A.115(a) · Regulation (EU) No 1321/2014 · verbatim - Must Equip basic training workshops and/or maintenance facilities specified in point 147.A.100(d) with all tools and equipment necessary for the approved scope of training. - Who Training organisation - When Always Rule text 147.A.115(b) > The basic training workshops and/or maintenance facilities as specified in point 147.A.100(d) must have all tools and equipment necessary to perform the approved scope of training. 147.A.115(b) · Regulation (EU) No 1321/2014 · verbatim - Must Provide an appropriate selection of aircraft, engines, aircraft parts and avionic equipment in the basic training workshops and/or maintenance facilities specified in point 147.A.100(d). - Who Training organisation - When Always Rule text 147.A.115(c) > (c) The basic training workshops and/or maintenance facilities as specified in point 147.A.100(d) must have an appropriate selection of aircraft, engines, aircraft parts and avionic equipment. 147.A.115(c) · Regulation (EU) No 1321/2014 · verbatim - Must Have access to the appropriate aircraft type. For aircraft type training as specified in point 147.A.100(e). - Who Training organisation - When Always Rule text 147.A.115(d) > The aircraft type training organisation as specified in point 147.A.100(e) must have access to the appropriate aircraft type. 147.A.115(d) · Regulation (EU) No 1321/2014 · verbatim - May Use MSTDs for the aircraft type training. If the devices ensure adequate training standards. - Who Training organisation - When Always Rule text 147.A.115(d) > MSTDs may be used when such training devices ensure adequate training standards. 147.A.115(d) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.120 Maintenance training material 3 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-120) - Must Provide students with maintenance training course material covering the applicable content listed in points 147.A.120(a)(1) and 147.A.120(a)(2). - Who Training organisation - When Always Rule text 147.A.120(a) > Maintenance training course material shall be provided to the student and cover as applicable: 147.A.120(a) · Regulation (EU) No 1321/2014 · verbatim - Must Give students access to examples of maintenance documentation and technical information in the library specified in point 147.A.100(i). - Who Training organisation - When Always Rule text 147.A.120(b) > Students shall have access to examples of maintenance documentation and technical information of the library as specified in point 147.A.100(i). 147.A.120(b) · Regulation (EU) No 1321/2014 · verbatim - May Provide maintenance training material in hard copy or by electronic means. For basic or type training courses, if students have appropriate means to access the material at any time throughout the entire course. - Who Training organisation - When Always Rule text 147.A.120(c) > Access to the maintenance training material relevant to basic or type training courses may be provided as a hard copy or by electronic means provided that the student has the appropriate means to access such material at any given time during the entire duration of the course. 147.A.120(c) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.125 Records 1 obligation · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-125) - Must Keep all student training, examination and assessment records. - Who Training organisation - When Always - Time limit for an unlimited period Rule text 147.A.125 > The organisation shall keep all student training, examination and assessment records for an unlimited period. 147.A.125 · Regulation (EU) No 1321/2014 · verbatim ### 147.A.130 Training procedures and quality system 3 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-130) - Must Establish procedures acceptable to the competent authority ensuring proper training standards and compliance with all relevant requirements of this Part. - Who Training organisation - When Always Rule text 147.A.130(a) > The organisation shall establish procedures acceptable to the competent authority to ensure proper training standards and compliance with all relevant requirements in this Part. 147.A.130(a) · Regulation (EU) No 1321/2014 · verbatim - Must Establish a quality system with an independent audit function monitoring training standards, knowledge examination and practical assessment integrity, and compliance with and adequacy of procedures. - Who Training organisation - When Always Rule text 147.A.130(b)(1) > The organisation shall establish a quality system including: 1. an independent audit function to monitor training standards, the integrity of knowledge examinations and practical assessments, compliance with and adequacy of the procedures, and 147.A.130(b)(1) · Regulation (EU) No 1321/2014 · verbatim - Must Include in the quality system a feedback system for audit findings to the person(s) and ultimately the accountable manager referred to in point 147.A.105(a), ensuring corrective action as necessary. - Who Training organisation - When Always Rule text 147.A.130(b)(2) > The organisation shall establish a quality system including: 1. an independent audit function to monitor training standards, the integrity of knowledge examinations and practical assessments, compliance with and adequacy of the procedures, and 2. a feedback system of audit findings to the person(s) and ultimately to the accountable manager referred to in point 147.A.105(a) to ensure, as necessary, corrective action. 147.A.130(b)(2) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.135 Examinations 7 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-135) - Must Ensure the security of all examination questions. For examination staff. - Who Instructors, examiners and assessors - When Always Rule text 147.A.135(a) > The examination staff shall ensure the security of all questions. 147.A.135(a) · Regulation (EU) No 1321/2014 · verbatim - Must Disqualify the student from the examination and do not admit them to any examination for at least 12 months after the incident. When a student is found during a knowledge examination cheating or possessing subject material other than the examination papers and associated authorised documentation. - Who Training organisation - When On an event - Time limit for at least 12 months after the incident Rule text 147.A.135(b) > Any student found during a knowledge examination to be cheating or in possession of material pertaining to the examination subject other than the examination papers and associated authorised documentation shall be disqualified from taking the examination and may not take any examination for at least 12 months after the date of the incident. 147.A.135(b) · Regulation (EU) No 1321/2014 · verbatim - Must Inform the competent authority of the incident and provide details of any enquiry. When a student is found during a knowledge examination cheating or possessing subject material other than the examination papers and associated authorised documentation. - Who Training organisation - When On an event - Time limit within one calendar month Rule text 147.A.135(b) > Any student found during a knowledge examination to be cheating or in possession of material pertaining to the examination subject other than the examination papers and associated authorised documentation shall be disqualified from taking the examination and may not take any examination for at least 12 months after the date of the incident. The competent authority shall be informed of any such incident together with the details of any enquiry within one calendar month. 147.A.135(b) · Regulation (EU) No 1321/2014 · verbatim - Must Disqualify the examiner from acting as an examiner. When an examiner is found during a knowledge examination providing question answers to a student being examined. - Who Training organisation - When On an event Rule text 147.A.135(c) > Any examiner found during a knowledge examination to be providing question answers to any student being examined shall be disqualified from acting as an examiner and the examination declared void. The competent authority must be informed of any such occurrence within one calendar month. 147.A.135(c) · Regulation (EU) No 1321/2014 · verbatim - Must Declare the affected knowledge examination to be void. When an examiner is found during a knowledge examination providing question answers to a student being examined. - Who Training organisation - When On an event Rule text 147.A.135(c) > Any examiner found during a knowledge examination to be providing question answers to any student being examined shall be disqualified from acting as an examiner and the examination declared void. The competent authority must be informed of any such occurrence within one calendar month. 147.A.135(c) · Regulation (EU) No 1321/2014 · verbatim - Must Inform the competent authority of the occurrence. When an examiner is found during a knowledge examination providing question answers to a student being examined. - Who Training organisation - When On an event - Time limit within one calendar month Rule text 147.A.135(c) > Any examiner found during a knowledge examination to be providing question answers to any student being examined shall be disqualified from acting as an examiner and the examination declared void. The competent authority must be informed of any such occurrence within one calendar month. 147.A.135(c) · Regulation (EU) No 1321/2014 · verbatim - Must Conduct examinations under Part-147 approval in a controlled environment described in the MTOE, allowing student identity, proper conduct, examination integrity and material security to be established and verified. - Who Training organisation - When Always Rule text 147.A.135(d) > The examination shall be performed in a controlled environment by a training organisation approved under this Annex and described in its maintenance training organisation exposition (MTOE). For examination purposes, a ‘controlled environment’ means an environment where the following can be established and verified: (a) the identity of the students; (b) the proper conduct of the examination process; (c) the integrity of the examination and (d) the security of the examination material. 147.A.135(d) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.140 Maintenance training organisation exposition 3 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-140) - Must Provide an exposition describing the organisation and its procedures, containing all information listed in points 147.A.140(a)(1) to 147.A.140(a)(12). - Who Training organisation - When Always Rule text 147.A.140(a) > The organisation shall provide an exposition for use by the organisation describing the organisation and its procedures and containing the following information: 147.A.140(a) · Regulation (EU) No 1321/2014 · verbatim - Must Obtain competent authority approval for the exposition and subsequent amendments. Unless a minor amendment receives indirect approval under point 147.A.140(c). - Who Training organisation - When On an event Rule text 147.A.140(b) > The maintenance training organisation's exposition and any subsequent amendments shall be approved by the competent authority. 147.A.140(b) · Regulation (EU) No 1321/2014 · verbatim - May Use the exposition procedure for indirect approval of minor amendments. - Who Training organisation - When On an event Rule text 147.A.140(c) > Notwithstanding point (b) minor amendments to the exposition may be approved through an exposition procedure (hereinafter called indirect approval). 147.A.140(c) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.145 Privileges of the maintenance training organisation 16 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-145) - May Conduct basic training courses, or parts of them, to the Annex III (Part-66) syllabus. When permitted by and acting in accordance with the maintenance training organisation exposition. - Who Training organisation - When Always Rule text 147.A.145(a)(i) > The maintenance training organisation may carry out the following as permitted by and in accordance with the maintenance training organisation exposition: (i) basic training courses to the Annex III (Part-66) syllabus, or part thereof; 147.A.145(a)(i) · Regulation (EU) No 1321/2014 · verbatim - May Conduct aircraft type/task training courses in accordance with Annex III (Part-66). When permitted by and acting in accordance with the maintenance training organisation exposition. - Who Training organisation - When Always Rule text 147.A.145(a)(ii) > The maintenance training organisation may carry out the following as permitted by and in accordance with the maintenance training organisation exposition: (i) basic training courses to the Annex III (Part-66) syllabus, or part thereof; (ii) aircraft type/task training courses in accordance with Annex III (Part-66); 147.A.145(a)(ii) · Regulation (EU) No 1321/2014 · verbatim - May Examine students who attended the basic or aircraft type training course at the organisation. When permitted by and acting in accordance with the maintenance training organisation exposition. - Who Training organisation - When Always Rule text 147.A.145(a)(iii) > The maintenance training organisation may carry out the following as permitted by and in accordance with the maintenance training organisation exposition: (i) basic training courses to the Annex III (Part-66) syllabus, or part thereof; (ii) aircraft type/task training courses in accordance with Annex III (Part-66); (iii) the examination of students who attended the basic or aircraft type training course at the maintenance training organisation; 147.A.145(a)(iii) · Regulation (EU) No 1321/2014 · verbatim - May Examine students who did not attend the aircraft type training course at the organisation. When permitted by and acting in accordance with the maintenance training organisation exposition. - Who Training organisation - When Always Rule text 147.A.145(a)(iv) > The maintenance training organisation may carry out the following as permitted by and in accordance with the maintenance training organisation exposition: (i) basic training courses to the Annex III (Part-66) syllabus, or part thereof; (ii) aircraft type/task training courses in accordance with Annex III (Part-66); (iii) the examination of students who attended the basic or aircraft type training course at the maintenance training organisation; (iv) the examination of students who did not attend the aircraft type training course at the maintenance training organisation; 147.A.145(a)(iv) · Regulation (EU) No 1321/2014 · verbatim - May Examine students who did not attend the basic training course at the organisation. When permitted by and in accordance with the MTOE, at a location identified in the approval certificate. - Who Training organisation - When Always Rule text 147.A.145(a)(v)(1) > (v) the examination of students who did not attend the basic training course at the maintenance training organisation, provided that: (1) the examination is conducted at one of the locations identified in the approval certificate, or (2) if performed at locations not identified in the approval certificate, as permitted by points (b) and (c), either the examination is provided through a European Central Question Bank (ECQB), or in the absence of an ECQB, the competent authority selects the questions for the examination; 147.A.145(a)(v)(1) · Regulation (EU) No 1321/2014 · verbatim - May Examine students who did not attend the basic training course at the organisation through an ECQB. When permitted by and in accordance with the MTOE, at locations outside the approval certificate as permitted by points 147.A.145(b) and 147.A.145(c). - Who Training organisation - When Always Rule text 147.A.145(a)(v)(2) > (v) the examination of students who did not attend the basic training course at the maintenance training organisation, provided that: (1) the examination is conducted at one of the locations identified in the approval certificate, or (2) if performed at locations not identified in the approval certificate, as permitted by points (b) and (c), either the examination is provided through a European Central Question Bank (ECQB), or in the absence of an ECQB, the competent authority selects the questions for the examination; 147.A.145(a)(v)(2) · Regulation (EU) No 1321/2014 · verbatim - May Examine students who did not attend the basic training course at the organisation using questions selected by the competent authority. When an ECQB is absent and the MTOE permits and governs examinations at locations outside the approval certificate under points 147.A.145(b) and 147.A.145(c). - Who Training organisation - When Always Rule text 147.A.145(a)(v)(2) > (v) the examination of students who did not attend the basic training course at the maintenance training organisation, provided that: (1) the examination is conducted at one of the locations identified in the approval certificate, or (2) if performed at locations not identified in the approval certificate, as permitted by points (b) and (c), either the examination is provided through a European Central Question Bank (ECQB), or in the absence of an ECQB, the competent authority selects the questions for the examination; 147.A.145(a)(v)(2) · Regulation (EU) No 1321/2014 · verbatim - May Issue certificates in accordance with Appendix III. After successful completion of the applicable approved courses and examinations in points 147.A.145(a)(i) to 147.A.145(a)(v), as permitted by and in accordance with the MTOE. - Who Training organisation - When On an event Rule text 147.A.145(a)(vi) > (vi) the issue of certificates in accordance with Appendix III following successful completion of the approved basic or aircraft type training courses and examinations specified in points (a)(i), (a)(ii), (a)(iii), (a)(iv) and (a)(v), as applicable. 147.A.145(a)(vi) · Regulation (EU) No 1321/2014 · verbatim - Must Conduct theoretical training, knowledge examinations, practical training and practical assessments only at locations identified in the approval certificate or specified in the MTOE. Unless the derogation in point 147.A.145(c) applies. - Who Training organisation - When Always Rule text 147.A.145(b) > Theoretical training, knowledge examinations, practical training and practical assessments may be carried out only at the locations identified in the approval certificate or at any location specified in the MTOE. 147.A.145(b) · Regulation (EU) No 1321/2014 · verbatim - Must Conduct training, knowledge examinations and practical assessments only in accordance with the control procedure specified in the maintenance training organisation exposition. For locations different from those in point 147.A.145(b). - Who Training organisation - When Always Rule text 147.A.145(c) > By derogation to point (b), the maintenance training organisation may only conduct training, knowledge examinations and practical assessments in locations different from the point (b) locations in accordance with a control procedure specified in the maintenance training organisation exposition. 147.A.145(c) · Regulation (EU) No 1321/2014 · verbatim - May Use those locations without listing them in the maintenance training organisation exposition. When following the control procedure under point 147.A.145(c) at locations different from those in point 147.A.145(b). - Who Training organisation - When Always Rule text 147.A.145(c) > By derogation to point (b), the maintenance training organisation may only conduct training, knowledge examinations and practical assessments in locations different from the point (b) locations in accordance with a control procedure specified in the maintenance training organisation exposition. Such locations need not be listed in the maintenance training organisation exposition. 147.A.145(c) · Regulation (EU) No 1321/2014 · verbatim - Must Subcontract basic theoretical training, type training and related examinations to a non maintenance training organisation only under the control of the maintenance training organisation quality system. - Who Training organisation - When Always Rule text 147.A.145(d)(1) > The maintenance training organisation may subcontract the conduct of basic theoretical training, type training and related examinations to a non maintenance training organisation only when under the control of the maintenance training organisation quality system. 147.A.145(d)(1) · Regulation (EU) No 1321/2014 · verbatim - Must Limit subcontracting of basic theoretical training and examination to Annex III (Part-66), Appendix I, Modules 1, 2, 3, 4, 5, 6, 8, 9 and 10. - Who Training organisation - When Always Rule text 147.A.145(d)(2) > The subcontracting of basic theoretical training and examination is limited to Annex III (Part-66), Appendix I, Modules 1, 2, 3, 4, 5, 6, 8, 9 and 10. 147.A.145(d)(2) · Regulation (EU) No 1321/2014 · verbatim - Must Limit subcontracting of type training and examination to powerplant and avionic systems. - Who Training organisation - When Always Rule text 147.A.145(d)(3) > The subcontracting of type training and examination is limited to powerplant and avionic systems. 147.A.145(d)(3) · Regulation (EU) No 1321/2014 · verbatim - Must not Obtain approval to conduct examinations without approval to conduct the corresponding training. Unless the derogation in point 147.A.145(f) applies. - Who Training organisation - When Once Rule text 147.A.145(e) > An organisation may not be approved to conduct examinations unless approved to conduct the corresponding training. 147.A.145(e) · Regulation (EU) No 1321/2014 · verbatim - May Obtain approval to provide type examination. When approved to provide basic knowledge training or type training and type training is not required. - Who Training organisation - When Once Rule text 147.A.145(f) > By derogation from point (e), an organisation approved to provide basic knowledge training or type training may also be approved to provide type examination in the cases where type training is not required. 147.A.145(f) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.150 Changes to the maintenance training organisation 1 obligation · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-150) - Must Notify the competent authority of proposed changes to the organisation that affect its approval. - Who Training organisation - When On an event - Time limit before any such change takes place Rule text 147.A.150(a) > The maintenance training organisation shall notify the competent authority of any proposed changes to the organisation that affect the approval before any such change takes place, in order to enable the competent authority to determine continued compliance with this Part and to amend if necessary the maintenance training organisation approval certificate. 147.A.150(a) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.155 Continued validity 3 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-155) - Must Remain in compliance with this Part, in accordance with the handling-of-findings provisions specified in point 147.B.130. For continued validity of the approval. - Who Training organisation - When Always Rule text 147.A.155(a)(1) > It shall remain valid subject to: 1. the organisation remaining in compliance with this Part, in accordance with the provisions related to the handling of findings as specified in point 147.B.130; and 147.A.155(a)(1) · Regulation (EU) No 1321/2014 · verbatim - Must Grant the competent authority access to the organisation to determine continued compliance with this Annex (Part-147). For continued validity of the approval. - Who Training organisation - When Always Rule text 147.A.155(a)(2) > It shall remain valid subject to: 1. the organisation remaining in compliance with this Part, in accordance with the provisions related to the handling of findings as specified in point 147.B.130; and 2. the competent authority being granted access to the organisation to determine continued compliance with this Annex (Part-147); and 147.A.155(a)(2) · Regulation (EU) No 1321/2014 · verbatim - Must Return the approval to the competent authority. When the approval is surrendered or revoked. - Who Training organisation - When On an event Rule text 147.A.155(b) > Upon surrender or revocation, the approval shall be returned to the competent authority. 147.A.155(b) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.160 Findings 2 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-160) - Must Define a corrective action plan addressing the notified findings. After receiving notification of findings according to point 147.B.130. - Who Training organisation - When On an event - Time limit within a period agreed with the competent authority Rule text 147.A.160(c) > After receipt of notification of findings according to point 147.B.130, the holder of the maintenance training organisation approval shall define a corrective action plan and demonstrate corrective action to the satisfaction of the competent authority within a period agreed with this authority. 147.A.160(c) · Regulation (EU) No 1321/2014 · verbatim - Must Demonstrate corrective action to the satisfaction of the competent authority. After receiving notification of findings according to point 147.B.130. - Who Training organisation - When On an event - Time limit within a period agreed with the competent authority Rule text 147.A.160(c) > After receipt of notification of findings according to point 147.B.130, the holder of the maintenance training organisation approval shall define a corrective action plan and demonstrate corrective action to the satisfaction of the competent authority within a period agreed with this authority. 147.A.160(c) · Regulation (EU) No 1321/2014 · verbatim ## Subpart C — Approved basic training course ### 147.A.200 The approved basic training course 9 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-200) - Must Include knowledge training, knowledge examination, practical training and a practical assessment in the approved basic training course. - Who Training organisation - When Always Rule text 147.A.200(a) > The approved basic training course shall consist of knowledge training, knowledge examination, practical training and a practical assessment. 147.A.200(a) · Regulation (EU) No 1321/2014 · verbatim - Must Cover the subject matter for the aircraft maintenance licence category or subcategory specified in Annex III (Part-66) in the knowledge training element. - Who Training organisation - When Always Rule text 147.A.200(b) > The knowledge training element shall cover the subject matter for a category or subcategory aircraft maintenance licence as specified in Annex III (Part-66). 147.A.200(b) · Regulation (EU) No 1321/2014 · verbatim - Must Cover a representative cross section of subject matter from the training element in point 147.A.200(b) in the knowledge examination element. - Who Training organisation - When Always Rule text 147.A.200(c) > The knowledge examination element shall cover a representative cross section of subject matter from the point (b) training element. 147.A.200(c) · Regulation (EU) No 1321/2014 · verbatim - Must Cover practical use of common tooling/equipment, disassembly/assembly of a representative selection of aircraft parts, and participation in representative maintenance activities relevant to the particular Part-66 complete module in the practical training element. - Who Training organisation - When Always Rule text 147.A.200(d) > The practical training element shall cover the practical use of common tooling/equipment, the disassembly/assembly of a representative selection of aircraft parts and the participation in representative maintenance activities being carried out relevant to the particular Part-66 complete module. 147.A.200(d) · Regulation (EU) No 1321/2014 · verbatim - Must Cover the practical training in the practical assessment and determine whether students are competent in using tools and equipment and working in accordance with maintenance manuals. - Who Training organisation - When Always Rule text 147.A.200(e) > The practical assessment element shall cover the practical training and determine whether the student is competent at using tools and equipment and working in accordance with maintenance manuals. 147.A.200(e) · Regulation (EU) No 1321/2014 · verbatim - Must Set basic training course durations in accordance with Appendix I. Unless training hours are amended under point 147.A.200(g). - Who Training organisation - When Always Rule text 147.A.200(f) > The duration of basic training courses shall be in accordance with Appendix I. 147.A.200(f) · Regulation (EU) No 1321/2014 · verbatim - May Amend the basic training hours established in Appendix I. For benefits from changes in theoretical training technologies and methods, or credits under point 66.A.25(e), if syllabus content and schedule describe and justify the changes. - Who Training organisation - When Always Rule text 147.A.200(g) > Notwithstanding point (f), in order to benefit from changes in training technologies and methods (theoretical training), or from credits specified in point 66.A.25(e) of Annex III (Part-66), the number of hours as established in Appendix I (Basic training course duration) may be amended provided that the syllabus content and schedule describe and justify the proposed changes. 147.A.200(g) · Regulation (EU) No 1321/2014 · verbatim - Must Include a procedure in the MTOE to justify the changes to training hours. When changing training hours under point 147.A.200(g). - Who Training organisation - When On an event Rule text 147.A.200(g) > A procedure shall be included in the MTOE to justify those changes. 147.A.200(g) · Regulation (EU) No 1321/2014 · verbatim - Must Determine conversion course durations between categories or subcategories by assessing the basic training syllabus and related practical training needs. - Who Training organisation - When Always Rule text 147.A.200(h) > The duration of conversion courses between (sub)categories shall be determined through an assessment of the basic training syllabus and the related practical training needs. 147.A.200(h) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.205 Basic knowledge examinations 3 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-205) - Must Conduct basic knowledge examinations in accordance with the standard defined in Annex III (Part-66). - Who Training organisation - When Always Rule text 147.A.205(a) > Basic knowledge examinations shall: (a) be in accordance with the standard defined in Annex III (Part-66). 147.A.205(a) · Regulation (EU) No 1321/2014 · verbatim - Must not Conduct basic knowledge examinations with the use of training notes. - Who Training organisation - When Always Rule text 147.A.205(b) > Basic knowledge examinations shall: (a) be in accordance with the standard defined in Annex III (Part-66). (b) be conducted without the use of training notes. 147.A.205(b) · Regulation (EU) No 1321/2014 · verbatim - Must Cover a representative cross section of subjects from the particular module of training completed in accordance with Annex III (Part-66) in basic knowledge examinations. - Who Training organisation - When Always Rule text 147.A.205(c) > Basic knowledge examinations shall: (a) be in accordance with the standard defined in Annex III (Part-66). (b) be conducted without the use of training notes. (c) cover a representative cross section of subjects from the particular module of training completed in accordance with Annex III (Part-66). 147.A.205(c) · Regulation (EU) No 1321/2014 · verbatim ### 147.A.210 Basic practical assessment 1 obligation · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-210) - Must Carry out basic practical assessments as the nominated practical assessor. After each visit period to the practical workshops or maintenance facility, during the basic maintenance training course. - Who Instructors, examiners and assessors - When On an event - Time limit at the completion of each visit period Rule text 147.A.210(a) > Basic practical assessments shall be carried out during the basic maintenance training course by the nominated practical assessors at the completion of each visit period to the practical workshops/maintenance facility. 147.A.210(a) · Regulation (EU) No 1321/2014 · verbatim ## Subpart D — Aircraft type/task training ### 147.A.300 Aircraft type/task training 1 obligation · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-300) - Must Obtain approval to carry out Annex III (Part-66) aircraft type and/or task training, subject to compliance with the standard specified in point 66.A.45. - Who Training organisation - When Once Rule text 147.A.300 > A maintenance training organisation shall be approved to carry out Annex III (Part-66) aircraft type and/or task training subject to compliance with the standard specified in point 66.A.45. 147.A.300 · Regulation (EU) No 1321/2014 · verbatim ### 147.A.305 Aircraft type evaluation and task assessment 1 obligation · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-305) - Must Conduct the aircraft type evaluation or aircraft task assessment specified in Annex III (Part-66), complying with the aircraft type and/or task standard in point 66.A.45. If approved under point 147.A.300 to conduct aircraft type training. - Who Training organisation - When On an event Rule text 147.A.305 > A maintenance training organisation approved in accordance with point 147.A.300 to conduct aircraft type training shall conduct the aircraft type evaluation or aircraft task assessment specified in Annex III (Part-66) subject to compliance with the aircraft type and/or task standard specified in point 66.A.45 of Annex III (Part-66). 147.A.305 · Regulation (EU) No 1321/2014 · verbatim ## Appendices ### Appendix I Basic training course duration 2 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/appendices-to-amc-to-annex-iv-part-147/appendix-i) - Must Meet the minimum durations in Appendix I, subject to point 147.A.200(g), and apply its theoretical training ratios. For complete basic training courses. - Who Training organisation - When Always Rule text Appendix I > The minimum duration of a complete basic training course shall be as follows: Appendix I · Regulation (EU) No 1321/2014 · verbatim - Must Increase training hours by the additional durations specified in Appendix I, subject to point 147.A.200(g), and apply the listed theoretical training ratios. For B2L basic training courses with additional system ratings selected. - Who Training organisation - When Always Rule text Appendix I > (\*) This number of hours shall be increased as follows, depending on the additional system ratings selected: Appendix I · Regulation (EU) No 1321/2014 · verbatim ### Appendix II Maintenance Training Organisation Approval — EASA Form 11 2 obligations · [Rule text](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/appendices-to-amc-to-annex-iv-part-147/appendix-ii) - Must Limit activities under the approval to the scope of work specified in the approved maintenance training organisation exposition. - Who Training organisation - When Always Rule text Appendix II > 1\. This approval is limited to what is specified in the scope of work section of the approved maintenance training organisation exposition as referred to in Section A of Annex IV (Part-147); and Appendix II · Regulation (EU) No 1321/2014 · verbatim - Must Comply with the procedures specified in the approved maintenance training organisation exposition. - Who Training organisation - When Always Rule text Appendix II > 2\. this approval requires compliance with the procedures specified in the approved maintenance training organisation exposition; and Appendix II · Regulation (EU) No 1321/2014 · verbatim 2 rules and appendices set no obligation - [147.A.05](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-05) Scope — Scope statement; establishes the subject of Section A without a separate duty, permission or prohibition. - [Appendix III](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/appendices-to-amc-to-annex-iv-part-147/appendix-iii) Certificates of Recognition referred to in Annex IV (Part-147) — EASA Forms 148 and 149 — The supplied text contains only the appendix heading, with no certificate content or operative duty to extract. * Written from the implementing rules of Regulation (EU) No 1321/2014 — Section A and the appendices that set requirements — as amended up to Implementing Regulation (EU) 2026/100. * Every quoted sentence was checked word for word against that text on 2 Nov 2026. * AMC and GM are not included: they show ways to comply; this list is what the rule itself requires. Section B, what the competent authority does, is not included. * A summary can lose a nuance. The rule text binds, together with your approved exposition and your competent authority. Not the official publication — verify against the Official Journal of the European Union before operational use.