Aircraft Flight Operation Regulations Article 34

An operator shall ensure the operation competency and safety for an aircraft type newly introduced into service by complying with the following requirements before operations for compensation or hire:1. Before such operations, airplane shall have been flown at least 50 hours of proving tests, and at least 10 hours of which shall be flown at night.2. Before such operations, helicopters shall have been flown at least 25hours of proving tests, and at least 2 hours of which shall be flown at night.The required hours as set out in the preceding paragraph may be reduced, if CAA determines that a satisfactory level of proficiency has been demonstrated to justify the reduction, but shall not be reduced less than 25 hours for airplane and 10 hours for helicopters. The time requirement for night flight shall not be reduced.
中文原文 航空器飛航作業管理規則第34條
航空器使用人所使用之航空器,如其機型為該航空器使用人首次使用者,於營運前應先符合下列條件,以熟練各項作業,確保安全:
一、飛機於營運前應先行飛航至少五十小時,其中應包括十小時以上之夜間飛航。
二、直昇機於營運前應先行飛航至少二十五小時,其中應包括二小時以上之夜間飛航。
前項飛航時數,民航局得視航空器使用人飛安紀錄、操作經驗及查核情況後酌予增減,但其時數飛機以二十五小時,直昇機以十小時為限,其中夜間飛航時間不得減免。

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