blesko
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NavCanada to Change SID/STAR ATC Procedures
January 13, 2012
On February 9th, 2012, NAV CANADA, will implement a major change in Canadian ATC procedures that will require aircraft to comply with published SID/STAR altitude restrictions unless they are explicitly cancelled by ATC. Canada is making this change in an effort to implement procedures that conform to the International Civil Aviation Organization (ICAO) standards. While about 70% of ICAO member states utilize the standard procedures, certain countries, such as the United States do not.
In Canada, an aircraft that is assigned a SID/STAR, and then assigned a higher/lower altitude is still expected to comply with any published altitude restrictions on that SID/STAR while climbing/descending to the new assigned altitude unless ATC specifically states “ALL STAR ALTITUDE RESTRICTIONS CANCELLED.”
This change differs from U.S. ATC procedures contained in AIM section 4-4-10g, which state that any new altitude clearance cancels any previous altitude clearance and any published altitude restrictions on a SID/STAR unless the restrictions are restated by the controller. Aircrew should add this as a special briefing item prior to traveling to any airport in Canada with published conventional or RNAV STARs/SIDs.
Review the NAV CANADA ATC Bulletin (54 KB, PDF)
Comparison of FAA and NAV CANADA STAR Phraseologies
The following table contains a comparison of FAA and NAV CANADA STAR phraseologies. It is understood that the FAA intends to introduce CLIMB VIA phraseology similar to DESCEND VIA phraseology described in this table. NAV CANADA intends to remain compliant with ICAO procedures regarding published SID/STAR altitude restrictions when SIDs with multiple altitude restrictions are introduced in Canada.
ATC Instruction - FAA FAA Requirements DESCEND VIA (STAR designator) Requires the aircraft to navigate laterally and vertically to meet all published restrictions depicted in the STAR. DESCEND VIA (STAR designator) AND MAINTAIN (altitude) The aircraft must follow the lateral track of the STAR, however, unless restrictions are re-issued, the aircraft may descend unrestricted to the assigned altitude. (Aircraft already following a STAR)
DESCEND TO AND MAINTAIN (altitude)
Unless restrictions are re-issued, the aircraft may descend unrestricted to the assigned altitude. COMPLY WITH RESTRICTIONS Requires the aircraft to comply with published restrictions and may be used in lieu of re-issuing individual restrictions. ATC Instruction - NAV CANADA Canada/ICAO Requirements VIA (STAR designator) DESCEND TO (altitude) or CLEARED (approach procedure) Clearance via a STAR authorizes the aircraft to follow the STAR lateral track only. Once ATC issues descent or approach clearance, published altitude restrictions above the assigned altitude remain mandatory unless specifically cancelled by ATC. (Aircraft already following a STAR
DESCEND TO (altitude) Published altitude restrictions above the assigned altitude remain mandatory unless specifically cancelled by ATC. DESCEND TO (altitude), ALL STAR ALTITUDE RESTRICTIONS CANCELLED
or
DESCEND TO (altitude), ALTITUDE RESTRICTION AT (fix) CANCELLED
Examples of ATC phraseology for cancelling altitude restrictions.
January 13, 2012
On February 9th, 2012, NAV CANADA, will implement a major change in Canadian ATC procedures that will require aircraft to comply with published SID/STAR altitude restrictions unless they are explicitly cancelled by ATC. Canada is making this change in an effort to implement procedures that conform to the International Civil Aviation Organization (ICAO) standards. While about 70% of ICAO member states utilize the standard procedures, certain countries, such as the United States do not.
In Canada, an aircraft that is assigned a SID/STAR, and then assigned a higher/lower altitude is still expected to comply with any published altitude restrictions on that SID/STAR while climbing/descending to the new assigned altitude unless ATC specifically states “ALL STAR ALTITUDE RESTRICTIONS CANCELLED.”
This change differs from U.S. ATC procedures contained in AIM section 4-4-10g, which state that any new altitude clearance cancels any previous altitude clearance and any published altitude restrictions on a SID/STAR unless the restrictions are restated by the controller. Aircrew should add this as a special briefing item prior to traveling to any airport in Canada with published conventional or RNAV STARs/SIDs.
Review the NAV CANADA ATC Bulletin (54 KB, PDF)
Comparison of FAA and NAV CANADA STAR Phraseologies
The following table contains a comparison of FAA and NAV CANADA STAR phraseologies. It is understood that the FAA intends to introduce CLIMB VIA phraseology similar to DESCEND VIA phraseology described in this table. NAV CANADA intends to remain compliant with ICAO procedures regarding published SID/STAR altitude restrictions when SIDs with multiple altitude restrictions are introduced in Canada.
ATC Instruction - FAA FAA Requirements DESCEND VIA (STAR designator) Requires the aircraft to navigate laterally and vertically to meet all published restrictions depicted in the STAR. DESCEND VIA (STAR designator) AND MAINTAIN (altitude) The aircraft must follow the lateral track of the STAR, however, unless restrictions are re-issued, the aircraft may descend unrestricted to the assigned altitude. (Aircraft already following a STAR)
DESCEND TO AND MAINTAIN (altitude)
Unless restrictions are re-issued, the aircraft may descend unrestricted to the assigned altitude. COMPLY WITH RESTRICTIONS Requires the aircraft to comply with published restrictions and may be used in lieu of re-issuing individual restrictions. ATC Instruction - NAV CANADA Canada/ICAO Requirements VIA (STAR designator) DESCEND TO (altitude) or CLEARED (approach procedure) Clearance via a STAR authorizes the aircraft to follow the STAR lateral track only. Once ATC issues descent or approach clearance, published altitude restrictions above the assigned altitude remain mandatory unless specifically cancelled by ATC. (Aircraft already following a STAR
DESCEND TO (altitude) Published altitude restrictions above the assigned altitude remain mandatory unless specifically cancelled by ATC. DESCEND TO (altitude), ALL STAR ALTITUDE RESTRICTIONS CANCELLED or
DESCEND TO (altitude), ALTITUDE RESTRICTION AT (fix) CANCELLED
Examples of ATC phraseology for cancelling altitude restrictions.
