Regulations Governing the Certification for Aviation Products, Appliances and Parts Article 20

Minor changes in a type design can be undertaken only after the holder of the type certificate has received CAA approval for minor design change. When such design change has been completed, the holder of the type certificate should provide CAA with all the related substantiating and technical data. In addition, the holder of type certificate shall return the original type certificate to the CAA and apply for revising type certificate, if deemed necessary.
中文原文 航空產品與其各項裝備及零組件適航檢定管理規則第20條
輕度設計變更,型別檢定證持有人應向民航局提交其輕度設計變更程序,經民航局核准後始得為之;並應於變更後將證明文件或技術資料提交民航局備查。
必要時,型別檢定證持有人應繳回原型別檢定證申請換發。

English translation for reference only; the Chinese text prevails. Not legal advice.