Part 21 J – Design Organisation Approval

2-day course | Virtual, Classroom & In-company Delivery
  • Classroom course in London Gatwick and Singapore
  • Delivered by experienced UK CAA inspectors
  • Learn how to prepare for an assessment and the processes used by the UK CAA/EASA
  • Recognise how your organisation should comply with UK/EASA Part 21 J
Next available course
Start Date Venue Cost Availability Book
01/11/2023 London Gatwick £900.00 More than 5 places Book
View all dates In-Company Info

Course overview

What is an Part 21 Design Organisation Approval?

Part 21 Subpart J details the elements required of a design organisation in order to hold an EASA Design Organisation Approval (DOA). The DOA grants privileges for the organisation to design new products, product modifications or repairs and may include approval for these designs.

Course Overview

This course provides delegates with an understanding of the UK Civil Aviation Authority (CAA) and the European Aviation Safety Agency (EASA) Part 21 Subpart J and the associated topics concerning the changes to Type Design, Supplementary Type Certificates (STC) (modifications) and repairs.

Our Singapore courses are delivered in cooperation with the Singapore Aviation Academy. Please visit the SAA website for upcoming dates.

Who should attend?

This course is suitable for individuals responsible for compliance or certification within a design organisation. It is also suitable for those individuals responsible for the oversight of design organisations, either of subcontractors or from a regulatory perspective.

Key topics

This training course will include the following topics:

  • CAA & EASA Relationship
  • Part 21 and the other Subparts
  • Part 21 Subpart J Design Organisation Approvals (DOAs) change classification and changed product rule principles
  • Operational Suitability Data
  • Level of Involvement concepts
  • STC procedures
  • Repair approval procedures
  • Equipment approval procedures
  • UKTSO / ETSO and Equipment Software overview
  • When an EASA/CAA Form 1 may not be required
  • CAA & EASA DOAs Surveillance process

Course objectives

By the end of the course delegates will demonstrate understanding of the following through presentations and group discussion:

  • How their organisation should comply with the regulation
  • Process used by the Civil Aviation Authority (CAA) to carry out continued surveillance to Part 21 Subpart J
  • Process used by the European Union Aviation Safety Agency (EASA) to carry out continued surveillance to Part 21 Subpart J
  • How to prepare an organisation for an efficient and effective on-site assessment and surveillance
  • How to maintain a Part 21 Subpart J approval ensuring compliance at all time


It would be advantageous for delegates to be familiar with, or have experience of working in, a design-related organisation.

Further reading

EASA Part 21 Design Organisation Approvals
A Design Organisation Approval is the recognition that a Design Organisation complies with the requirements of Part 21 Subpart J.

Delivery Methods: Classroom and Virtual

This course can delivered virtually or face-to-face in classroom at our London Gatwick and Singapore training centres.

Browse the table below to select your preferred date, delivery method and location (classroom only). If you can not find your preferred form of delivery and date, please contact us.

Course type:

  • Web = Virtual online delivery using WebEx video conferencing. We have applied a 5% discount to all our virtual course deliveries. Unless stated otherwise, our virtual courses are streamed live, starting at 09:00 am (UK time).
  • Class = A face-to-face classroom course delivered in the location listed in the “venue” column. In light of COVID-19, please check your eligibility and our COVID-19 measures.


Review of course
Related courses
Part 21 G Production Organisation ApprovalMore
Part M Continuing AirworthinessMore
In-company delivery?

We can also tailor this training courses to suit an organisation’s individual training requirements. These bespoke training packages can be delivered virtually or onsite in a classroom at a client’s international location. Contact us for more information.

Course Type Course Name Start Date End Date Venue Cost Availability Book
Class Part 21 J Design Organisation Approval 01/11/2023 02/11/2023 London Gatwick £900.00 More than 5 places Book
Web Part 21 J Design Organisation Approval 10/01/2024 11/01/2024 Online £855.00 More than 5 places Book

EASA Part 21 J – Design Organisation Approval Instructors

EASA Part 21 J – Design Organisation Approval Instructors

Ian MacLaren

Ian MacLaren

EASA Part 21 G – Production Organisation Approval
EASA Part 21 J – Design Organisation Approval
EASA Part M Continuing Airworthiness

Ian has 34 years of experience in Aviation as an Airworthiness specialist, he spent 24 years with the UK CAA and 10 years with British Aerospace, now BAE Systems. Ian has previously worked as an Avionics design certification specialist and a Part 145 and Part M specialist. Ian is currently delivering our Initial Airworthiness and Continuing Airworthiness training courses and instructing training addressing the airworthiness aspects of Specific Approval.

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UK Locations
Our Mailing Address Aviation House Gatwick Airport South West Sussex RH6 0YR T: +44 (0) 330 0224401 Our Registered Address Aviation House Beehive Ring Road Crawley West Sussex RH6 0YR
Malaysia Location
Malaysian Aviation Academy Department of Civil Aviation Jalan Pekeliling 2, 64050 Sepang Selangor, Malaysia T: +603 8777 9011
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