21.A.611 Design changes

(a) The holder of the UKTSO authorisation may make minor design changes (any change other than a major change) without further authorisation by the CAA. In this case, the changed article keeps the original model number (part number changes or amendments shall be used to identify minor changes) and the holder shall forward to the CAA any revised data that are necessary for compliance with point 21.A.603(b).

(b) Any design change by the holder of the UKTSO authorisation that is extensive enough to require a substantially complete investigation to determine compliance with an UKTSO is a major change. Before making such a change, the holder shall assign a new type or model designation to the article and apply for a new authorisation under point 21.A.603.

(c) No design change by any natural or legal person other than the holder of the UKTSO authorisation who submitted the statement of compliance for the article is eligible for approval under this Subpart O unless the person seeking the approval applies under point 21.A.603 for a separate UKTSO authorisation.