C.2 - Design Organisation Approval (DOA) and Alternative Procedure for Design Organisation Approval (AP DOA)

Please use the application forms published on the  Application Forms page under ‘Design Organisations’.

Regulation (EU) 2025/2347 is applicable from 1 January 2026. The fees for DOA are outlined in Table 9A of the Annex – Part I to the regulation.

The fee category is determined by two elements:

• the type of activity for which a DOA is requested (DOA category)
• the number of staff related to the activities under the scope of the DOA

The approval fee in Table 9A is due per application and per 12-month period.

The surveillance fee is due every 12 months from DOA issuance.

The significant change approval fee is levied per application and applies to each individual change of the DOA responsibilities or procedures, terms of approval or DOA category. It does not apply to changes to the organisation or changes to the number of staff, refer to 21.A.247 and GM1 21.A.247, 21.A.245(d)(1)

For all sites involved in design and certification activities under the approval, all staff involved in the following activities should be counted:

• Managing the design organisation
• Drawing, calculating, testing, simulating
• Producing and verifying compliance documentation
• Performing airworthiness office tasks
• Performing system monitoring

In addition, for design subcontractors, the following staff should be counted:

• All staff involved in producing compliance documents
• All staff involved in verifying compliance documents
• All staff involved in airworthiness office tasks

All staff involved in system monitoring

Regulation (EU) 2025/2347 is applicable from 1 January 2026. The fees for Alternative Procedures to DOA (APDOA) are outlined in Table 9B of the Annex – Part I to the regulation.

The approval fee in Table 9B (Category 1A, 2A, 3A) is due per application.