Understanding and Implementing UK CAA Part 21J Design Organisation Approval

UK CAA Part 21 Subpart J defines the regulatory requirements for Design Organisation Approval (DOA), governing how approved organisations control aircraft and aeronautical product design, manage design assurance, and demonstrate continued airworthiness compliance.

Henning Aviation’s UK CAA Part 21J (DOA) – 1 Day Course provides a practical and structured overview of the regulation, focusing on how DOA requirements are applied in real design and certification environments. The course supports both organisations seeking initial DOA approval and those maintaining continued compliance.

Course Outline:

Overview of UK CAA Part 21 and the design assurance framework

Scope and applicability of Part 21 Subpart J (DOA)

DOA privileges, limitations, and organisational responsibilities

Design assurance system (DAS) structure and key elements

Control of design data, changes, and certification activities

Interface between DOA, POA, and the UK CAA

Continued airworthiness responsibilities and obligations

Compliance monitoring, oversight, and audit preparation

Learning Outcomes:

By the end of this course, participants will be able to:

Understand the purpose and structure of UK CAA Part 21 Subpart J

Interpret key DOA requirements and regulatory expectations

Recognise DOA holder roles, responsibilities, and privileges

Support effective design control and compliance activities

Prepare for UK CAA audits and ongoing regulatory oversight

Benefits of the Course:

Practical guidance aligned with UK CAA design approval expectations

Delivered by experienced aviation compliance specialists

Supports both initial DOA approval and continued compliance

Improves confidence in managing design assurance obligations

Suitable for design, certification, and quality functions

Ideal for: Design Engineers, Certification Engineers, Compliance Managers, Airworthiness Managers, and Accountable Managers involved in DOA activities.