Regulations of Civil Air Transport Enterprise Article 21
To apply for domestic scheduled flights, a civil air transport enterprise shall comply with the following provisions:1) A timetable of scheduled flight shall be submitted, twenty days before it takes effect, to CAA for approval. Any changes should be reported five working days before taking effect, to CAA for approval.2) Cancellation for certain reasons of a scheduled flight already approved should be reported beforehand to the relevant air terminal.
中文原文 民用航空運輸業管理規則第21條
民用航空運輸業申請國內定期飛航，依下列規定辦理：
一、定期飛航班機時間表，應於生效前二十日報請民航局核准，如有變更時，應於生效前五工作日報請民航局核准。
二、因故取消已核准之定期班機，應事先向有關航空站報備。
一、定期飛航班機時間表，應於生效前二十日報請民航局核准，如有變更時，應於生效前五工作日報請民航局核准。
二、因故取消已核准之定期班機，應事先向有關航空站報備。