EASA PART-147 MAINTENANCE TRAINING ORGANISATIONS · Aero Support Group FZCO · Updated 22 October 2026
What Part-147 requires
The organisation requirements in Section A, Subpart B of Part-147 include:
- 147.A.100: facility requirements, including classrooms, practical training facilities and examination rooms;
- 147.A.105: personnel requirements, including the accountable manager, the person responsible for training and quality, and qualified instructors, knowledge examiners and practical assessors;
- 147.A.110 and 147.A.125: records of instructors, examiners and assessors, and of students;
- 147.A.115 and 147.A.120: instructional equipment and maintenance training material;
- 147.A.130: training procedures and the quality system;
- 147.A.135: examinations;
- 147.A.140: the maintenance training organisation exposition (MTOE);
- 147.A.145 and 147.A.150: privileges and changes to the organisation.
Subparts C and D cover the approved basic training course and aircraft type or task training, with the associated examinations and practical assessments.
Basic and type training
Basic training covers the Part-66 modules for the licence category concerned, with knowledge examinations and practical training assessments. Course content follows the syllabus in Part-66 Appendix I.
Type training covers theoretical and practical elements for a specific aircraft type, following Part-66 Appendix III, and ends with examinations and assessments that support the type rating endorsement.
Examination security, question bank management and the independence of examiners are areas authorities look at closely.
Where training organisations run into difficulty
- The MTOE describes facilities, equipment or instructors the organisation no longer has.
- Training material is not kept current with Part-66 changes or manufacturer data.
- Instructor and examiner qualifications and continuation training are not recorded.
- Question banks are not controlled, or examinations are not secure.
- The quality system audits paperwork but not the delivery of training.
How ASG supports Part-147 organisations
- Gap analysis against Part-147, Part-66 and the current AMC and GM.
- MTOE drafting or revision, written around the organisation’s facilities, courses and staff.
- Training procedures, examination procedures and quality system development.
- Preparation for initial approval and oversight audits, including mock audits.
- Ongoing compliance support.
Conclusion
A Part-147 approval rests on an MTOE that matches the organisation’s facilities, courses and staff, and on examinations the authority can trust. ASG helps training organisations reach and keep that standard.
Frequently asked questions
The national competent authority for organisations based in an EU Member State, and EASA for organisations located outside the EU.
The maintenance training organisation exposition required by 147.A.140, describing the organisation and its procedures for training and examination.
Part-147 is not in the scope of Regulation (EU) 2023/203. Other approvals the same organisation holds may be.
Approved basic training courses for Part-66 licence categories and aircraft type or task training, within the scope of its approval.
Yes. ASG drafts and revises MTOEs based on the organisation’s actual facilities, courses and staff.
Key takeaways
- Part-147 is Annex IV to Regulation (EU) No 1321/2014
- EASA approves organisations outside the EU
- The MTOE must match facilities, courses and staff
- Examination security is a common audit focus
- Part-147 is not in the scope of Part-IS
Planning a Part-147 approval?
Tell us your courses and location. ASG will assess readiness against Part-147 and plan the work.