Rules of the Air Article 63
Outside controlled airspace, if a flight plan was submitted; an aircraft operated in accordance with VFR which intends to change to IFR shall notify the appropriate ATS unit with the necessary changes, if a flight plan was not submitted; an aircraft shall comply with the provision of Article 30, and submit a flight plan to the appropriate ATS unit. If operating within controlled airspace, an aircraft shall obtain a clearance from ATC unit prior to proceeding IFR.
中文原文 飛航規則第63條
在管制空域外作目視飛航之航空器欲改作儀器飛航時，其已填送飛航計畫者，應將改變之飛航計畫通知適當之飛航服務單位。
其未填送飛航計畫者應依第三十條之規定，提報飛航計畫至適當之飛航服務單位。
其在管制空域內飛航者，並應經航管單位許可後方得實施。
其未填送飛航計畫者應依第三十條之規定，提報飛航計畫至適當之飛航服務單位。
其在管制空域內飛航者，並應經航管單位許可後方得實施。