Division (11) In Table 9A of Part I of the Annex, Design Organisations are categorised as follows:
United Kingdom
| Design Organisation Agreement Scope | Group A | Group B | Group C |
| DOA 1 Type certificates holders ETSOA-APU | Highly complex/Large | Complex/Small-Medium | Less complex/Very small |
| DOA 2 STC/Changes/Repairs/ ETSOA (excluding APU) | Unrestricted | Restricted (technical fields) | Restricted (aircraft size) |
| Highly complex/Large | Complex/Small-Medium | Less complex/Very small | |
| DOA 3 Minor Changes/Repairs | Unrestricted | Restricted (technical fields) | Restricted (aircraft size) |