![]() ![]() Air traffic must ensure obstacle clearance when issuing a “descend via” instruction to the pilot. Air traffic will assign an altitude to cross the waypoint/ fix, if no altitude is depicted at the waypoint/fix, for aircraft on a direct routing to a STAR.The “descend via” is used in conjunction with STARs to reduce phraseology by not requiring the controller to restate the altitude at the next waypoint/fix to which the pilot has been cleared.Once at the published speed, ATC expects pilots will maintain the published speed until additional adjustment is required to comply with further published or ATC assigned speed restrictions or as required to ensure compliance with 14 CFR Section 91.117. ATC anticipates pilots will begin adjusting speed the minimum distance necessary prior to a published speed restriction so as to cross the waypoint/fix at the published speed.When otherwise cleared along a route or procedure that contains published speed restrictions, the pilot must comply with those speed restrictions independent of any descend via clearance.Once established on the depicted arrival, to descend and to meet all published or assigned altitude and/or speed restrictions. When cleared to a waypoint depicted on a STAR, to descend from a previously assigned altitude at pilot's discretion to the altitude depicted at that waypoint. If the STAR contains published altitude and/or speed restrictions, those restrictions are canceled and pilots will receive an altitude to maintain and, if necessary, a speed.Ĭlearance to “descend via” authorizes pilots to:ĭescend at pilot's discretion to meet published restrictions and laterally navigate on a STAR. If a descent clearance has been received that included a crossing restriction, pilots should expect the controller to issue an altitude to maintain. This authorization will contain the phraseology “ DESCEND VIA.” If vectored or cleared to deviate off a STAR, pilots must consider the STAR canceled, unless the controller adds “expect to resume STAR” pilots should then be prepared to rejoin the STAR at a subsequent fix or procedure leg. ![]() Pilots navigating on, or navigating a published route inbound to, a STAR procedure must maintain last assigned altitude until receiving authorization to descend so as to comply with all published/issued restrictions. Pilots should plan to cross waypoints with a published speed restriction, at the published speed, and should not exceed this speed past the associated waypoint unless authorized by ATC or a published note to do so. Published speed restrictions are independent of altitude restrictions and are mandatory unless modified by ATC. Other STARs may have planning information depicted to inform pilots what clearances or restrictions to “ expect.” “ Expect” altitudes/speeds are not considered STAR procedures crossing restrictions unless verbally issued by ATC. STAR procedures may have mandatory speeds and/or crossing altitudes published. ![]() STARs simplify clearance delivery procedures, and also facilitate transition between en route and instrument approach procedures. Standard Terminal Arrival (STAR) ProceduresĪ STAR is an ATC coded IFR arrival route established for application to arriving IFR aircraft destined for certain airports.FAA Form 7233−4 International Flight Plan ![]()
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