Civil Aviation Act Article 14

The certificate of airworthiness shall become invalid upon any of the following events:1)Expiration of the certificate.2)Invalidation or revocation of the certificate of registration.3)Aircraft did not meet the airworthiness condition.The certificate of airworthiness shall remain valid if the registration number is unchanged when ownership is transferred and is not subject to subparagraph 2 of preceding paragraph.
中文原文 民用航空法第14條
適航證書遇有下列情事之一者,失其效力:
一、有效期間屆滿時。
二、登記證書失效時。
三、航空器不合適航安全條件時。
航空器所有權移轉時,未變更國籍標誌及登記號碼者,其適航證書之效力,不受前項第二款規定之限制。

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