The Regulation Governing the Handling of Investigation Procedures for Civil and Public Aircraft Occurrence Article 26

Where the reporting, determination, on-scene operations, interviews, investigation, and release of investigation reports relating to a major aviation occurrence involves international elements and is beyond the purview of these Regulations, the TTSB may consult the standards, recommendations, methods or procedures in international conventions and their annexes to supplement these Regulations with enacting Directions.
中文原文 民用航空器及公務航空器重大飛航事故調查作業處理規則第26條
重大飛航事故之通報、認定、現場處理、訪談、調查及報告發布有關事項,涉及國際事務而本規則未規定者,運安會得參照有關國際公約及其附約所定標準、建議、辦法或程序,另定行政規則補充本規則有關之規定。

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