Aircraft Flight Operation Regulations Article 129

All turbine-engined airplanes of a maximum certificated take-off mass in excess of 5,700 kg or authorized to carry more than 19 passengers shall be equipped with an airborne collision avoidance system (ACAS II).Aall turbine-engined airplanes of a maximum certificated take-off mass in excess of 15,000 kg or authorized to carry more than 30 passengers shall be equipped with an airborne collision avoidance system (ACAS II).The requirement of an airborne collision avoidance system aforementioned in the preceding 2 paragraphs may be waived by CAA approval under any one of the following conditions:1. The manufacturer of the aircraft does not provide the Service Bulletins (SB) which meets the requirements for the alteration to ACAS II as outlined in ICAO Annex 10, volume IV.2. The operator is unable to obtain from the aviation industry market, the Supplemental Type Certificates (STC) issued by CAA, FAA, EASA or the state of design, for such alteration.3. All airplanes, which are operated linking Taiwan to Chi-Mei and Wan-An (Penghu county), Lan-Yu and Lyudao (Taitung county), and linkng between other offshore islands, with a maximum certificated take off mass between 5,700kg and 15,000kg.The airborne collision avoidance system installed in accordance with the article herein shall comply with the requirements prescribed in ICAO Annex 10, Volume IV.
中文原文 航空器飛航作業管理規則第129條
渦輪發動機之飛機,其最大起飛重量超過五千七百公斤或載客座位數超過十九座者,應裝置第二代空中防撞系統。
渦輪發動機之飛機其最大起飛重量超過一萬五千公斤或載客座位數超過三十座者,應裝置第二代空中防撞系統。
前二項規定裝置空中防撞系統有下列情形之一並經申請民航局核准者,不在此限:
一、該航空器原製造廠未提供技術通報供改裝至符合國際民用航空公約第十號附約第四卷規範之第二代空中防撞系統所需。
二、航空器使用人無法於市場上取得我國、美國、歐洲聯合航空安全署或原設計國等民航主管機關之補充型別檢定證供技術修改所需者。
三、飛航臺灣本島與澎湖縣之七美鄉與望安鄉、臺東縣之蘭嶼鄉與綠島鄉等離島地區或離島與其離島地區間航線,最大起飛重量介於五千七百公斤至一萬五千公斤之航空器。
依本條所裝置之空中防撞系統,應符合國際民用航空公約第十號附約第四卷之規定。

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