This document outlines changes to standard instrument departure (SID) and standard terminal arrival (STAR) phraseologies used in air traffic control communications. The core phraseologies for climbs and descents via published SID/STAR procedures are provided. Supplementary phraseologies are introduced to remove speed or level restrictions or to vary the lateral profile by proceeding direct to a waypoint or vectoring. New phraseology is also provided to indicate a return to the original SID/STAR procedure after a variation. What does not change with these updates, such as other speed restrictions or terrain clearance responsibilities, is also detailed.
This document outlines changes to standard instrument departure (SID) and standard terminal arrival (STAR) phraseologies used in air traffic control communications. The core phraseologies for climbs and descents via published SID/STAR procedures are provided. Supplementary phraseologies are introduced to remove speed or level restrictions or to vary the lateral profile by proceeding direct to a waypoint or vectoring. New phraseology is also provided to indicate a return to the original SID/STAR procedure after a variation. What does not change with these updates, such as other speed restrictions or terrain clearance responsibilities, is also detailed.
This document outlines changes to standard instrument departure (SID) and standard terminal arrival (STAR) phraseologies used in air traffic control communications. The core phraseologies for climbs and descents via published SID/STAR procedures are provided. Supplementary phraseologies are introduced to remove speed or level restrictions or to vary the lateral profile by proceeding direct to a waypoint or vectoring. New phraseology is also provided to indicate a return to the original SID/STAR procedure after a variation. What does not change with these updates, such as other speed restrictions or terrain clearance responsibilities, is also detailed.
This document outlines changes to standard instrument departure (SID) and standard terminal arrival (STAR) phraseologies used in air traffic control communications. The core phraseologies for climbs and descents via published SID/STAR procedures are provided. Supplementary phraseologies are introduced to remove speed or level restrictions or to vary the lateral profile by proceeding direct to a waypoint or vectoring. New phraseology is also provided to indicate a return to the original SID/STAR procedure after a variation. What does not change with these updates, such as other speed restrictions or terrain clearance responsibilities, is also detailed.
Standard Instrument Departures (SIDs) and CLIMB VIA SID TO (level) Standard Instrument Arrivals (STARs) provide a DESCEND VIA STAR TO (level) safe and efficient way of prescribing a large These require the aircraft to: amount of information through procedure 1. Climb/descend to the cleared level in design. Both depict the lateral profile of an accordance with published level instrument departure or arrival route and the restrictions; level and speed restrictions along it. 2. Follow the lateral profile of the SID/STAR phraseology allows ATC and aircrew procedure; and to communicate and understand detailed 3. Comply with published speed clearance information that would otherwise restrictions or ATC-issued speed require long and potentially complex control instructions as applicable. transmissions. Over time, these benefits have been eroded Phraseologies for removal of speed or level through the development of non-harmonised restrictions: practices and different meanings being CLIMB VIA SID TO (level), CANCEL attached to certain elements of SID/STAR SPEED RESTRICTION(S) phraseology. Consequently, there may be a DESCEND VIA STAR TO (level), CANCEL mismatch between ATC and aircrew LEVEL RESTRICTION(S) AT (point(s)) expectations when SID/STAR phraseology is These phraseologies mean that: used, and what certain terms may mean. This 1. The lateral profile of the procedure presents a safety risk that requires a renewed continue to apply and effort to adopt harmonised SID/STAR 2. Speed or level restrictions which have phraseology. not been referred to will continue to The reason for the Changes apply.
The purposes of this change are to:
Phraseologies for variations to lateral provide core phraseology that positively profile of the SID/STAR: reinforces that the lateral, vertical and speed PROCEED DIRECT (waypoint), or requirements embedded in a SID or STAR VECTORING will continue to apply, unless explicitly These phraseologies mean that: cancelled or amended by the controller; Speed and level restrictions associated with provide supplementary phraseology that the bypassed waypoints are cancelled. enables any level and/or speed restrictions as local circumstances, practice or procedures permit; Phraseology to return to SID/STAR: harmonise through appropriate phraseology REJOIN SID/STAR the means by which aircraft must be cleared This phraseology means that: where variations to the lateral profile are Speed and level restrictions associated with required, such as where waypoints along the the waypoint where the rejoin occurs, as procedure are bypassed. well as those associated with all subsequent waypoints must be complied with. CHANGES TO SID/STAR PHRASEOLOGIES
What doesn’t change
Use of CANCEL SPEED RESTRICTION applies only to the speed restrictions associated with the SID or STAR procedure. It does not cancel other speed restrictions such as the speed limits detailed at ICAO Annex 11 Chapter 2 and Appendix 4. The requirement for a QNH altimeter setting to be included in the descent clearance when first cleared to an altitude below the transition level, except when it is known that the aircraft has already received the information (PANS-ATM 4.10.4.5 refers), does not change. The terrain clearance responsibilities prescribed in ICAO Doc 4444 (PANS-ATM) 8.6.5.2 do not change. The requirement in ICAO Annex 10 for the highest standard of discipline to be applied to all communications at all times does not change. And finally, while pilots and ATS providers are expected to comply with the revised phraseology, in unusual or unforeseen circumstances it may not be possible to apply the phraseology as intended. Should this happen, pilots and ATS personnel are still expected to use plain language, which must be as clear and concise as possible.