Part-145 training requirements: every duty, clause by clause

“EASA Part-145 training” is not one course — it is a set of distinct duties that Annex II to Regulation (EU) No 1321/2014 places on a maintenance organisation, each with its own population, syllabus reference and repeat cycle. This page maps every one of them to the clause that creates it, links the guide that walks each clause, and states which duty each MOST.AERO course serves. It is written for the technician checking their own training file and for the quality or compliance monitoring manager checking everyone else’s.

Part-145 training duties at a glance

Duty	Who it covers	Cycle	Clause
Competency incl. safety management and human factors	All personnel in maintenance, airworthiness reviews, safety management and compliance monitoring	Initial, then continuation in each 2-year period	145.A.30(e), AMC4 145.A.30(e)
Certifying and support staff training	Certifying staff and support staff	Each 2-year period	145.A.35(d)
Fuel tank safety (FTS)	Phase 1 or Phase 2 populations per the organisation’s exposition	Phase 2: 2-year continuation cycle	Appendix IV to AMC5 145.A.30(e)
EWIS	Target groups 1–8 per the organisation’s needs assessment	Not exceeding 2 years	AMC 20-22
Regulation knowledge	Accountable manager, nominated persons, and the wider competency duty	Initial; no fixed repeat cycle in the rule	145.A.30(a)(3), 145.A.30(cc), 145.A.30(e)
Records of all of it	Every person above	Whole employment + at least 3 years after leaving	145.A.55

What training does Part-145 actually require?

The root of almost every training row in a Part-145 file is the competency duty:

(e) The organisation shall establish and control the competency of the personnel involved in any maintenance, airworthiness reviews, safety management and compliance monitoring in accordance with a procedure and to a standard agreed with the competent authority. In addition to the necessary expertise related to the job function, the competency of the personnel must include an understanding of the application of safety management principles, including human factors and human performance issues, which is appropriate to their function and responsibilities in the organisation. — 145.A.30(e)

Two things follow from the wording. First, the population is wide — not only certifying staff but anyone involved in maintenance, airworthiness reviews, safety management or compliance monitoring. Second, the mechanism is the organisation’s own procedure agreed with the authority, which is why acceptance questions about any course end at the maintenance organisation exposition, not at the seller’s website. AMC4 145.A.30(e) then shapes the duty into a syllabus (the GM1 topic list), an initial course taken before or within six months of starting the job function, and a continuation component in each 2-year period.

For certifying staff and support staff, a second clause runs in parallel:

(d) The organisation shall ensure that all certifying staff and support staff receive sufficient recurrent training in each 2-year period to ensure that they have up-to-date knowledge of relevant technologies, organisation procedures and safety management, including human factor issues. — 145.A.35(d)

Where the quoted rule text uses its own word for the repeating cycle, this site says continuation for the same thing, matching the AMC4 145.A.30(e)(c) wording. Our guides on whether human factors training is mandatory and how often it must run take each question in depth, and the two-year continuation guide covers the date arithmetic that audits actually test — the window runs from the last course date and does not pause.

The matching MOST.AERO courses are Safety Training including Human Factors — Initial (€89) and — Continuation (€49), both online and self-paced, both stating on their pages the clauses above so the mapping can be checked against the MOE before buying.

What about fuel tank safety and EWIS?

Both are training duties a Part-145 file must show for the affected populations, and both run on their own cycles.

Fuel tank safety comes from Appendix IV to AMC5 145.A.30(e): Phase 1 familiarisation for some roles, Phase 2 detailed training for others, assigned by the organisation’s exposition — with the Phase 2 population on a two-year continuation cycle. Our Phase 1 versus Phase 2 guide separates the two populations. MOST.AERO does not sell a fuel tank safety course today; the guide stays free either way.

EWIS comes from AMC 20-22, which builds the programme around target groups 1 to 8 assigned by the organisation’s own needs assessment, refreshed in a period not exceeding two years. The target groups 1 to 8 guide explains who needs what, who needs EWIS training walks the assignment, and the AMC 20-22 clause-by-clause guide quotes the operative sentences. MOST.AERO does not sell an EWIS course today either.

Where do Part-66 Modules 9 and 10 fit?

They are a different track. Modules 9 (Human Factors) and 10 (Aviation Legislation) sit in Appendix I to Part-66 — knowledge modules for the aircraft maintenance licence, rewritten by Regulation (EU) 2023/989 — and neither substitutes for the organisation’s 145.A.30(e) duty, nor the reverse. The Module 9 versus Part-145 human factors guide draws the line. For licence candidates, MOST.AERO’s Part-66 Module 9 + Safety Training — Initial covers both needs in one course, and Part-66 Module 10 — Aviation Legislation follows the post-2023/989 syllabus sub-module by sub-module; the Module 9 and Module 10 syllabus guides print each syllabus in full. Neither course is a Part-147 basic-knowledge examination: under 66.A.25(b) that examination belongs to a Part-147 approved organisation or the competent authority.

What is Part-145 regulatory training?

Part-145 never uses the phrase; it is the practical answer to 145.A.30(a)(3) and 145.A.30(cc), which require the accountable manager and nominated persons to demonstrate an understanding of the Regulation, and it supports everyone else’s competency duty. EASA Part-145 Regulatory Training — Initial (€89) walks Annex II section by section, from scope and terms of approval to the 145.A.200 management system. The rule sets no fixed repeat cycle for it, so there is no continuation product beside it. If you arrived here looking for “Part-M training”, our EASA Part-M training guide explains what replaced the Part-M organisation approvals in 2022 and which training duty applies in a Part-CAMO or Part-CAO.

What must the training file show?

Training that happened but cannot be evidenced fails the audit anyway. 145.A.55 keeps personnel records for the whole employment and at least three years after the person leaves or an authorisation is withdrawn, and the training records guide walks the retention triggers, the backup rules and the four fields a certificate must feed the record: course name, the learner’s name, the completion date and the issuer. Next to the training record sits the competency assessment — training alone does not demonstrate competence, and the competency assessment guide covers AMC1 and AMC2 145.A.30(e).

Does any of this differ in the UK?

The UK kept the Part-145 text after Brexit — UK 145.A.30(e) is word for word the EU clause with the CAA as competent authority — but SI 2023/588 added the management system requirement, in force 1 July 2024 with the CAA’s implementation date of 1 July 2026, and the surveyor will look for the safety-training records that support it. The UK SMS and safety training guide covers the dates, and EASA versus UK CAA certificates after Brexit covers whose certificate serves which file. Every MOST.AERO course page states both the EASA and UK CAA clause references it serves.

Choosing a course without guessing

Three checks travel well, whoever the seller is. Match the clause: the course page should name the clause and syllabus it serves — our price index found sellers ranging from £40 to €144 for the same initial subject, and the content behind a price varies as much as the number. Match the population and cycle: an initial course does not close a continuation window, and one subject’s certificate does not evidence another subject’s row in the file. Match the MOE: acceptance is the organisation’s procedure agreed with its authority, so when in doubt, the compliance monitoring manager’s reading of the exposition — not the seller’s marketing — settles it. The guides above stay free either way; the online-acceptance guide is the place to start if acceptance is the open question.