Regulations for Administrating Pilots Article 15
The validity of the Pilot License shall not exceed five years. An application for license replacement shall be made upon expiration of such license, with the existing license to be surrendered for revocation.
中文原文 引水人管理規則第15條
引水人執業證書之有效期間不得超過五年，期滿應即申請換發，並將原有證書繳銷。