Regulations Governing the Safe Transport of Dangerous Goods by Air Article 30

In the event of a dangerous goods incident during flight, the pilot-in-command shall, as soon as the situation permits, report the information related to the dangerous goods aboard to the air traffic control, which shall pass such information to the airport authority of entry.
中文原文 危險物品空運管理辦法第30條
航空器於飛航中發生危險物品事件時,機長於狀況許可下,應儘速將所裝載危險物品之資訊通報飛航管制單位轉知降落地航空站。

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