Civil Aviation Act Article 16

In case a registered aircraft is found to be in non-conformity with the provisions of the paragraph II of Article 8, Article 10 or Article 11, the CAA shall cancel the registration and order the certificate of registration be returned.
中文原文 民用航空法第16條
已登記之航空器,如發現與第八條第二項、第十條或第十一條之規定不合者,民航局應撤銷其登記,並令繳還登記證書。

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