21.A.602B Demonstration of capability
Any applicant for an UKTSO authorisation shall demonstrate its capability as follows:
(a) for production, by holding a production organisation approval, issued in accordance with Subpart G, or through compliance with Subpart F procedures; and
(b) for design:
1. for an Auxiliary Power Unit, by holding a design organisation approval, issued by the CAA in accordance with Subpart J;
2. for all other articles, by using procedures setting out the specific design practices, resources and sequence of activities necessary to comply with this Annex I (Part 21).