REPUBLIC OF CHINA AIC for Taipei FIR
Civil Aviation Administration Air Traffic Services Division No. 340 Dunhua N.Road Taipei, 105, Taiwan TEL:886-2-2349-6118 FAX:886-2-2349-6122 AFS:RCTPYAYX Email:ais@mail.caa.gov.tw		AIC 02/24
		Effective from 26 JUN 2024 Published on 26 JUN 2024

IMPLEMENTATION OF ICAO STANDARD INSTRUMENT DEPARTURE AND STANDARD INSTRUMENT ARRIVAL PHRASEOLOGIES IN TAIPEI FIR

1 INTRODUCTION

1.1. This circular is to inform airline operators and pilots on the changes to the ATC-pilot phraseologies to be used when operating on standard instrument departure (SID)/standard instrument arrival (STAR) procedure. Effective from SEP 25, 2024, Taipei FIR will implement ICAO standard instrument departure and standard instrument arrival phraseologies (CLIMB/DESCEND VIA SID/STAR) in accordance with DOC 4444 sixteenth edition.

1.2. The intent of the ICAO SID/STAR phraseologies is to clarify expectations for ATC and pilots. Use of the core phraseology (CLIMB/DESCEND VIA SID/STAR) means that pilots must follow all published level and speed restrictions along the SID/STAR profile.

2 BACKGROUND

2.1. SID/STAR provides a safe and efficient way of prescribing a large amount of information through procedure design. Both depict the lateral profile of an instrument departure or arrival route and the level and speed restrictions associated with it.

2.2. Over time, the benefits of SID/STAR have decreased through the development of non-harmonized practices and inconsistences in certain elements of SID/STAR phraseology. As a consequence, the expectations of ATC and pilot may not be synchronized when SID/STAR phraseology is used, and certain terms misinterpreted. This presents a safety risk that requires a renewed effort to adopt harmonized SID/STAR phraseology.

2.3. To build a common understanding, harmonized phraseology is implemented globally by ICAO. The established solution was designed to provide pilots with certain direction regarding expected level and speed at all times. The new procedures rely on core phraseology (CLIMB/DESCEND VIA SID/STAR) to indicate the level and speed restrictions associated with a published procedure. Besides, specific phraseology is introduced to instruct pilots to cancel the published restriction, as well as to leave or rejoin a procedure.

3 WITH THE IMPLEMENTATION OF THE NEW SID/STAR PROCEDURES

3.1. If a pilot is cleared via SID/STAR, inform ATC on initial contact. CLIMB/DESCEND VIA SID/STAR clearances must be read back.

3.2. Unless a pilot is cleared direct to a waypoint, or vectored on purpose, the pilot must always comply with the lateral profile of the SID/STAR.

3.3. When ATC assigns a level, the pilot must climb or descend to the ATC-assigned level and follow the guidance in this AIC regarding adherence to level and speed restrictions.

3.4. ATC must clear an aircraft to a certain level before the aircraft can climb or descend on the SID/STAR vertical profile.

3.5. When no published restrictions exist, or no remaining published level or speed restrictions on the SID/STAR, the phrase CLIMB AND MAINTAIN (level) or DESCEND AND MAINTAIN (level) will be used.

3.6. When unable to meet a published restriction, a pilot must inform ATC as soon as possible.

4 OVERVIEW OF THE CORE PHRASEOLOGY

	航管許可 ATC Clearance	駕駛員操作 Pilot Action
核心術語 Core Phraseology	經由SID/(標準儀器離場程序名稱)爬高，保持(空層) 或經由STAR/(標準儀器到場程序名稱)下降，保持(空層)	依照SID/STAR之水平路徑飛航；爬高/下降至許可高度，並遵守程序頒布之高度及速度限制。
核心術語 Core Phraseology	CLIMB VIA SID/(SID name), MAINTAIN (level) or DESCEND VIA STAR/(STAR name), MAINTAIN (level)	Follow the lateral profile of the procedure. Climb/descend to the cleared level in accordance with published level and speed restrictions.
取消程序高度限制之術語 Phraseology for removal of level restrictions	經由SID/STAR 爬高/下降，保持(空層)，取消高度限制或經由SID/STAR 爬高/下降，保持(空層)，取消(航點)高度限制	依照SID/STAR之水平路徑飛航；爬高/下降至許可高度，取消程序頒布之高度限制(或取消程序特定航點之高度限制)；未提及的高度限制繼續適用。
取消程序高度限制之術語 Phraseology for removal of level restrictions	CLIMB/DESCEND VIA SID/STAR, MAINTAIN (level), CANCEL LEVEL RESTRICTION(s) or CLIMB/DESCEND VIA SID/STAR, MAINTAIN (level), CANCEL LEVEL RESTRICTION(s) AT (point(s))	Follow the lateral profile of the procedure. The published level restrictions are cancelled or cancelled at the specific waypoint. Level restrictions that have not been referred to will continue to apply.
變更程序水平路徑之術語 Phraseology for variations to lateral profile of the SID/STAR	直飛(航點) 或引導至(航點)，經由SID/STAR 爬高/下降保持(空層)	許可直飛至特定航點，程序上被略過航點之高度及速度限制不再適用；許可直飛至特定航點，及其後航段之高度及速度限制繼續適用。
	PROCEED DIRECT (waypoint) or VECTORING, CLIMB/DESCEND VIA SID/STAR, MAINTAIN (level)	Level and speed restrictions associated with the bypassed waypoints are cancelled. Published level restrictions associated with all subsequent waypoints, must be complied with.
重新加入程序之術語 Phraseology to return to SID/STAR	在(航點)重新加入SID/STAR/(標準儀器離場程序名稱)/(標準儀器到場程序名稱)	於重新加入程序之特定航點，及其後航段所有航點之高度及速度限制繼續適用。
重新加入程序之術語 Phraseology to return to SID/STAR	REJOIN SID/ STAR/ (SID name)/ (STAR name) AT (waypoint)	Level and speed restrictions associated with the waypoint where the rejoin occurs, as well as those associated with all subsequent waypoints, must be complied with.