A Design Organisation Approval is the recognition that a Design Organisation complies with the requirements of Part 21 Subpart J. The approval includes terms of approval defining:
- Scope of approval: The type of design activities including fields of expertise
- Categories of products: The applicable products such as Large Aeroplanes, Engines, Small Rotorcraft, Sailplanes, etc.
- List of products: The list of products for which the DOA holder is Type Certificate applicant or holder (if applicable)
- Privileges: A DOA holder can
- Perform design activities within the scope of approval
- Have compliance documents accepted by the Agency without further verification
- Perform activities independently from the Agency
- Limitations: Any limitations on the above
The following legislation is applicable to DOA:
Regulation (EU) 2018/1139 - Basic Regulation
- Commission Regulation (EU) No 748/2012 - Initial Airworthiness Regulation, including Part 21
- Relevant section of Regulation: Articles 1(h) & 8
- Annex I to Regulation (EC) No 748/2012 - Part 21 - Certification of aircraft and related products, parts and appliances, and of design and production organisations
- Relevant section of Part 21: Subpart J - Design Organisation Approval
- Acceptable Means of Compliance (AMC) and Guidance material (GM) page.
- ED Decision 2012/020/R - Acceptable Means of Compliance and Guidance Material
- Relevant section of AMC & GM document: Subpart J - Design Organisation Approval.
This legislation is updated regularly by issuing amendments. A full overview can be found on the Regulations page.
A Design Organisation Approval can be applied for by submitting an application form to EASA (FO.DOA.00080 under “Downloads” on the right). In addition, the following information needs to be provided to EASA during the investigation process:
- EASA Form 4-DOA (under “Downloads” on the right) - Qualifications and Experience of Management Staff Personnel. Normally this Form 4 is required for:
- Head of Design Organisation
- Chief of the Office of Airworthiness
- Chief of the Independent System Monitoring
- Design Organisation Handbook and Procedures
After acceptance of an application, EASA will assign a DOA Team Leader to conduct the investigation as summarised below:
This process will be further explained during a kick-off meeting organised by the DOA Team Leader.
After the issue of DOA Certificate, significant changes to the Design Organisation must be approved by the Agency, by submitting an application form (FO.DOA.00082 under “Downloads” on the right).
Fees & Charges
In accordance with Commission Regulation (EC) 319/2014, the Agency levies fees and charges for all its certification and approvals activities. Relevant sections for DOA can be found in the Annex, Table 7A of Part I and items (8) and (9) of Part V - Explanatory Note.
EASA Good Practices intend to clarify specific items of implementing rules for design organisation approvals. They highlight a particular subject and, as non-binding material, provide additional technical explanations to current standards.
EASA Good Practices are published for information purposes only and must not be regarded as formally adopted Acceptable Means of Compliance (AMC) or Guidance Material (GM).
EASA Good Practices do not introduce new or modified rules and do not constitute any legal obligation or right for the Agency or the organisations.
Queries related to Design Organisations can be sent to: doa [at] easa.europa.eu
Letters and paper documents/records can be sent to:
European Union Aviation Safety Agency
Design Organisation Approvals
P.O. Box 10 12 53
D-50452 Cologne, Germany