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Aircraft Parts and Appliances Certification Training – EASA Part 21
For design offices, manufacturers, suppliers and quality teams: understand how a part or appliance earns the right to be installed on a certified aircraft in Europe.
Course sheet
Aircraft Parts Certification – Part 21 course sheet
Before it is installed on an aircraft, every part must be approved and produced in conformity with its design. Regulation (EU) No 748/2012 and its Part 21 organise both steps: design, production and release of parts.
The course explains the three certification routes for a part (ETSO, approval within a TC or change, standard part), the role of DOA and POA organisations, and recent developments: SMS, Part-IS, Part 21 Light and additive manufacturing (CM-S-008).
Key facts
Duration, formats and delivery
Duration
About 3 hours of e-learning: 7 videos, 8 PDF sheets, 6 quizzes and a final exam.
Available 24/7, at your own pace.
Formats
E-learning on aero-consulting-online.com (individual access).
On-site, remote or blended to train a team, with your own cases.
Teaching methods
Narrated videos, process diagrams and practical cases.
Summary sheets and regulatory annexes (Part 21, ETSO standards).
5-question quiz after each module.
Assessment
Final exam: 20 multiple-choice questions.
80% correct answers required (16 out of 20); two attempts.
Certificate
Personal certificate of completion in PDF, as soon as you pass the exam.
Content up to date with recent Part 21 amendments (SMS 2023, Part-IS 2025).
Price
€85 per learner for e-learning.
Groups and companies: quote on request, volume discounts.
Learning objectives
By the end of the course, participants will be able to:
- Describe the role of EASA, national authorities and Regulation (EU) No 748/2012 (Part 21).
- Distinguish a type certificate (TC), minor or major changes and a supplemental type certificate (STC).
- Explain the obligations and privileges of a design organisation (DOA).
- Identify the right certification route for a part: ETSO, TC/change or standard part.
- Choose between production under a POA (Subpart G) and production without a POA (Subpart F).
- Build a certification strategy for an innovative part (additive manufacturing).
Why a course on parts certification?
A part that is not approved, wrongly identified or released without an EASA Form 1 cannot be installed. For a design office, manufacturer or supplier, choosing the right certification route from the start avoids months of delay and wasted investment.
Part 21 has changed a lot: safety management system since 2023, information security (Part-IS) since October 2025, Part 21 Light for light aviation, EASA expectations on additive manufacturing. This course brings you up to date.
Course programme
Module 1 – European regulatory framework
EASA, national authorities, reference texts, approvals.
Module 2 – Type certificate and changes
TC, minor / major, STC, means of compliance MC0 to MC9, OSD.
Module 3 – Design organisation (DOA)
Privileges, organisation, CVE, alternatives (ADOA).
Module 4 – Certification of parts
ETSO, TC, standard parts, marking, EASA Form 1.
Module 5 – Production: POA and Subpart F
Privileges, three pillars, steps to obtain a POA.
Module 6 – Strategy and regulatory watch
3D-printed parts, CM-S-008, SMS, Part-IS, Part 21 Light.
Regulatory annexes
Part 21 structure and key points, main ETSO standards.
Final exam
20 multiple-choice questions, then the certificate.
Target audience and prerequisites
The course is designed for:
- Design office engineers and technicians (DOA holders or applicants).
- Quality and production managers at manufacturers (POA, Subpart F).
- Suppliers and subcontractors of aircraft parts and appliances.
- Buyers, airworthiness managers and Part 145 / CAMO teams receiving parts.
Prerequisites: reading English; some aviation experience is recommended.
FAQ – Aircraft Parts Certification Part 21
What is the difference between an ETSO authorisation and a part approved within a TC?
An ETSO authorisation certifies the article itself against a CS-ETSO standard: it can be sold to several customers, but its installation still has to be approved on each aircraft. A part approved within a TC or change is only valid for the products concerned.
Do I need a POA to manufacture parts?
As a rule, yes: a POA (Part 21 Subpart G) allows you to issue EASA Form 1. Production without a POA (Subpart F) remains possible for limited production or while obtaining a POA, under closer oversight by the authority.
Does the course cover additive manufacturing?
Yes. Module 6 presents three strategies to certify a 3D-printed part and the expectations of EASA memorandum CM-S-008 (Issue 04, September 2025).
How long does the course take?
About 3 hours of e-learning, at your own pace: 6 video modules with PDF sheets and quizzes, then the final exam.
How is the certificate issued?
As soon as you pass the final exam (20 questions, 80% correct answers), your personal certificate can be downloaded as a PDF.
Is the course available in French?
Yes, the French version « Certification des pièces et équipements aéronautiques – EASA Part 21 » is available in e-learning at the same price.
See all our EASA aviation courses
E-learningTake the Aircraft Parts Certification Part 21 course in e-learning on Aero Consulting Online
Training your teams?
Tell us the number of participants, the format and the preferred period: we will send you a proposal within 48 hours. Volume discounts on request.
Training organisation registered in France – NDA 76 34 15133 34
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