Obligations · Annex IV

Part-147 obligations

Approval of organisations that train and examine for Part-66 aircraft maintenance licences.

93 obligations from 22 rules70 must · 20 may · 3 must notChecked against the text in force on 2 Nov 2026

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Subpart A — General

147.A.10General

1 obligation · Rule text

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.15Application

2 obligations · Rule text

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.100Facility requirements

13 obligations · Rule text

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.105Personnel requirements

10 obligations · Rule text

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.110Records of instructors, examiners and assessors

2 obligations · Rule text

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.115Instructional equipment

7 obligations · Rule text

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.120Maintenance training material

3 obligations · Rule text

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.125Records

1 obligation · Rule text

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.130Training procedures and quality system

3 obligations · Rule text

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.135Examinations

7 obligations · Rule text

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.140Maintenance training organisation exposition

3 obligations · Rule text

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.145Privileges of the maintenance training organisation

16 obligations · Rule text

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.150Changes to the maintenance training organisation

1 obligation · Rule text

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.155Continued validity

3 obligations · Rule text

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.160Findings

2 obligations · Rule text

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.200The approved basic training course

9 obligations · Rule text

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.205Basic knowledge examinations

3 obligations · Rule text

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.210Basic practical assessment

1 obligation · Rule text

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.300Aircraft type/task training

1 obligation · Rule text

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.305Aircraft type evaluation and task assessment

1 obligation · Rule text

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 IBasic training course duration

2 obligations · Rule text

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 IIMaintenance Training Organisation Approval — EASA Form 11

2 obligations · Rule text

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
Scope — Scope statement; establishes the subject of Section A without a separate duty, permission or prohibition.
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.

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