Rules of the Air Article 45

Requests for flight plan changes shall include information as indicated hereunder:1. Change of cruising level: aircraft identification; requested new cruising level and cruising speed at this level, revised estimated time at subsequent flight information region boundaries.2. Change of route.(1) Destination unchanged: aircraft identification; flight rules; description of new route of flight including related flight plan data beginning with the time and position from which requested change off routes to commence; revised estimated time at destination; any other pertinent information.(2) Destination changed: aircraft identification; flight rules; description of new route of flight to new destination including related flight plan data, beginning with the time and position from which requested change of route is to commence; estimated time of arrival at new destination; alternate aerodrome(s); any other pertinent information.
中文原文 飛航規則第45條
請求改變飛航計畫時應提報下列資料:
一、改變巡航空層:航空器識別、請求新巡航空層及其巡航空速、修正預計下一飛航情報區邊界時間。
二、改變航線:
(一)目的地不改變:航空器識別、飛航之規則、新航線之說明,包括自開始申請改變時之時間及位置等有關飛航計畫資料,修正預計目的地機場之時間及其他有關資料。
(二)目的地改變:航空器識別、飛航之規則、新航線之說明,包括自開始申請改變時之時間及位置等有關飛航計畫資料、預計新目的地機場之時間、備用機場及其他有關資料。

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