--- title: "147.A.100 Facility requirements — Part-147 · Avioverse" description: "The size and structure of facilities shall ensure protection from the prevailing weather elements and proper operation of all planned training and…" url: "https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements/147-a-100" --- # 147.A.100 Facility requirements Annex IV (Part-147) · Regulation (EU) No 1321/2014 · EAR revision 2 Sep 2025 IR Implementing rule ## 147.A.100 Facility requirements (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. (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. (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. (d) In the case of a basic training course, basic training workshops and/or [maintenance](https://avioverse.aero/glossary/easa/maintenance) facilities separate from training classrooms shall be provided for practical instruction appropriate to the planned training course. If, however, the [organisation](https://avioverse.aero/glossary/easa/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. (e) In the case of an [aircraft](https://avioverse.aero/glossary/easa/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). (f) The maximum number of students undergoing practical training during any training course shall not exceed 15 per instructor or assessor. (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. (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. The storage facilities and office accommodation may be combined, subject to adequate security. (i) A library shall be provided containing all technical material appropriate to the scope and level of training undertaken. (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. IR · 147.A.100 — Regulation (EU) No 1321/2014 · Regulation (EU) 2023/989 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025 GM Guidance material ## GM1 147.A.100 Facility requirements The number of students undergoing training is expected to be adequate to the nature and the conditions of the training in order to ensure proper interaction between the instructor and the students, taking into account pedagogical and human factors principles. GM · GM1 147.A.100 — Regulation (EU) No 1321/2014 · ED Decision 2023/019/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025 AMC Acceptable means of compliance ## AMC1 147.A.100(i) Facility requirements For approved basic [maintenance](https://avioverse.aero/glossary/easa/maintenance) training courses 1\. It means holding, and ensuring reasonable access to, copies of all relevant EU regulations and the Member States’ national aviation legislation, examples of typical [aircraft](https://avioverse.aero/glossary/easa/aircraft) maintenance manuals and service bulletins, airworthiness directives, aircraft and components records, release documentation, procedures manuals and aircraft maintenance programmes. 2\. Except for the relevant EU regulations and the Member States’ national aviation regulations, the remainder of the documentation should represent typical examples for both large and small aircraft and cover both aeroplanes and helicopters as appropriate. Avionics documentation should cover a representative range of available equipment. All documentation should be reviewed and updated on a regular basis. AMC · AMC1 147.A.100(i) — Regulation (EU) No 1321/2014 · ED Decision 2023/019/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025 GM Guidance material ## GM1 147.A.100(i) Facility requirements Where the [organisation](https://avioverse.aero/glossary/easa/organisation) has a library of regulations, manuals and documentation required by another EU regulation, it is not necessary to duplicate such a facility, subject to student access being under controlled supervision. GM · GM1 147.A.100(i) — Regulation (EU) No 1321/2014 · ED Decision 2023/019/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025 [All rules in SECTION A — TECHNICAL REQUIREMENTS](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-147/section-a-technical-requirements) Consolidated from the EASA Easy Access Rules (revision 2 Sep 2025, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.