EASA Part 21 Subpart J Regulatory Framework – Essentials – 1 Day


With effect from 7th March, 2023 EASA Part 21G – 21.A.139 Quality System is being renamed 21. A.139 Production Management System, however the functional requirements which can be considered as Quality Control Activities essentially remain the same. Additionally, a Safety Management System is required as a component of Part 21 G Management System.

Subpart J regulatory approval provides for the Design of Aircraft and Components Design Organisation Approval (DOA) and Subpart G provides for a Production Organization approval (POA).

The primary function of the DOA holder is to assume full responsibility for all designed products (Initial Airworthiness) including the need to support Continued Airworthiness of the designed product.

Whilst the role of the POA relates in part to the role of (Continued Airworthiness) the primary function of the organization is Initial Airworthiness in respect of managing the production of Products Parts and Appliances for use on aircraft, the process is regulated in accordance with the requirements of Part 21.

A company holding Part-21 Subpart J Design Organisation Approval (DOA), has the approval to Design and certify aircraft parts.

This Training Covers the Essential Elements relating to PART 21 Subpart J.

Training Regulatory Compliance

EASA Part 21 shows compliance additionally with (EU) No 2015/1039 (01/07/2015) and (EU) 2016/5 (12/01/2016).

Who is the Course for?

The course is beneficial for persons involved with Part 21 Production Organisations, Quality Managers/ Quality Auditors and Airline CAMO Staff.

What is the Benefit of this Training – What will I learn?

a) To be able to explain the Design Organisation Assurance System.

b) Achieve a  level of competency within your organisation related to Part 21 Subpart J regulatory obligations.

c) Understanding related to the development and ownership of the continuing airworthiness obligations related to Products Parts and Appliances.

d) To understand the mechanism whereby the CVE can certify full compliance with requirements.

e) To be able to actively engage in the involvement of all the regulatory authority and EASA.

f) To understand the methodology used to manage and control investigations and the development of Service information.

Detailed Content / Topics – The following Subjects will be addressed

➢ Contents
➢ General Introduction
➢ Abbreviations
➢ Introduction to EASA Part 21 Regulatory Environment
➢ Understanding the Certification and Approval Process
➢ Subpart J Design Organisation Approval
➢ Subpart J Design Organisation Approval Initial Issue and Assurance Process
➢ EASA Delegation Processes (Part 21 Subpart J)
➢ Practical Considerations related to the Design Assurance System and the roles and responsibilities including CVEs
➢ Understanding the process to manage the Design Organisation Handbook including the Procedures, Organisation Charts and the Amendment Procedure

Target groups

Nominated personnel and other key personnel in Part 21 Design & Production Organisations, Quality Managers/ Quality Auditors and Airline CAMO Staff.

Regulators and persons interested in obtaining a detailed understanding of the Design, Certification and Production of Aircraft Parts.


It is not necessary to have prior knowledge to participate in this training.

Learning Objectives

A detailed understanding of Aviation Product Design and Production regulatory driven processes.

A thorough understanding of the associated terminology and procedures including changes to Type Design, Control of Supplementary Type Certificates (STC) (modifications) and repairs.

This training is intended to focus on the essential elements to provide a comprehensive understanding of the entire Design Organization / Production Organization Process.

Certificate Wording

EASA Part 21 Regulatory Background, In-depth understanding of the Implementation and Management of a Part 21 Subpart J Organisation. Implementing Part 21 Quality Systems.  SMS in a Part 21 Organisation. Managing Competency in Part 21 and the role of the CVE & Organisation Approval Process.

What do People Say About Sofema Aviation Services’ Training?

“The presentation seemed long but it was covered in a very smooth way.”
“The instructor expanded our knowledge on the practical aspects too.”
“The instructor gave us some practical advice.”
“The length of the course fits perfectly its purposes.”
“The concrete examples helped me a lot to understand the material.”


1 day – Start at 09.00 and finish at 17.00, with appropriate refreshment breaks.

To register for this training, please email team@sassofia.com or Call +359 28210806

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