Regulations Governing Licences and Ratings for Airmen Article 77

Applicant for commercial pilot license-glider shall have no less than 3 sessions of dual instruction flight within the preceding 60 days. The applicant's flight check shall be conducted in accordance with CAA established “CAA GLIDER PILOT RATING REPORT FORM".
中文原文 航空人員檢定給證管理規則第77條
申請滑翔機商用駕駛員術科檢定者,於檢定前六十日內應有三次以上之滑翔機飛航教師帶飛訓練,其檢定項目依滑翔機駕駛員術科檢定報告表實施。

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