EASA Part 21J training for design in aviation

When it comes to aircraft or component design processes, we are one of the most competent contacts in the EU. AeroImpulse offers practice-oriented in-house training on EASA Part 21J, verification and certification.

EASA Part 21J – Gain design and certification competence

AeroImpulse – Your competent partner for design assurance systems in the aerospace supply chain

Certification specifications, classification of development projects, critical review items (CRIs), configuration management, verification, DAL level, compliance document, MoC, STC: these are just a few of the topics that aviation development engineers are confronted with – with or without EASA Part 21J certification. In addition, there are numerous documents that almost everyone knows or has heard of, but whose application causes problems in practice. Besides the building codes themselves, these are mostly RTCA DO 178, RTCA DO 160 and DO 256, SAE ARP 4671, FAR 25.1309, MOPS.

This is the environment in which you want to,

  • understand the flow of the design process,
  • correctly identify and interpret building codes and their AMC,
  • derive the correct method of comliance (MoC),
  • Perform tests in compliance with EASA and meet test documentation requirements,
  • discuss concrete operational issues and find solutions.

Our services

EASA Part 21J Trainings


Our EASA Part 21J training focuses on the basics of aviation regulation, on the concrete paragraphs and EASA requirement for design incl. a detailled discussion on the certification. This is followed by the specifics of Repair Approvals, Minor Changes, and Component Development. On a second day, there is the opportunity to get a deeper look into verification and compliance according to the EASA Certification Specification (CS) as well as other verification requirements.


  • Legal and regulatory requirements according to EASA Part 21
  • Organizational requirements for aerospace component developers,
  • Certification process for aeronautical components, incl. Supporting processes
  • Special issues for minor design and repair approvals
  • Classification of development projects,
  • Introduction to EASA Certification Specification and verification:
    • European (CS) and international regulations (FARs)
    • Working with Certification Specification (usually CS-25)
    • Showing of compliance, working with the MoC
    • Basics of Safety Assessment
  • Interpretation of the Certification Specification and selection of the method for compliance (MoC)
  • Interface between design organization and production / maintenance organization

Target group

The training is designed for employees in responsible for aeronautical products, parts and appliances who want to or have to deal with the specific requirements of our industry. Previous knowledge is not mandatory, but a basic knowledge of aeronautical development is advantageous. Our training on Part 21J and component design is aimed at the following target groups:

  • Engineers and designers
  • Managers in Design Organisations
  • Other design-related employees


Methodically, it is classroom training, which is enriched by numerous practical examples as well as exercises and discussions. A special focus is directed at the typical weak points of daily practice. From experience, our Part 21J training courses contain a high practical component through input  of the participants. In in-house training courses, we can deal in detail with operational issues and your specific design and approval questions and derive solutions. There is sufficient room for discussion. Therefore, many trainings will turn into workshops.


1 to 2 days according to customer demand


If desired, the training is followed by a test. After the EASA Part 21J training, you will receive a certificate from us that you can use as proof of training for the authorities.

With our EASA Part 21J training or component development training, we qualify engineers, designers, their managers and other design-relevant personnel. Our training courses focus on the preparation, implementation and documentation of design projects in accordance with EASA Part 21J and EN 9100:2018. You will learn to identify and correctly interpret Certification Specification and other component qualification requirements. You will also learn how to document test results appropriately.

Through the professional exchange of experience with our experienced trainers, practice-oriented case studies as well as concrete questions from your company, you will gain the necessary expert knowledge to develop according to aeronautical standards. To do this, we come to your company and train the staff.

Do you already know our Human Factors e-learning?

Human Factors Part 145 Training / E-Learning
  • 210 Minutes (Initial) or 90 min. (Refresher)
  • Video animated clips with sound
  • Certificate is sent automatically after passing the test
  • Saves working time compared to 1-day face-to-face training
  • Incl. all requirements of EASA Part 145

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We offer you trainings which are individually adapted to the requirements of your company.

EN 9100 Trainings?

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