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Atlantic Interoperability Initiative to Reduce Emissions (AIRE). Tailored Arrivals. Charles Buntin Ph.D. (Marc). June 11, 2008. Tailored Arrivals (aka: “Dynamic STAR”). Tailored arrival — key features: Continuous descent from cruise altitude to touchdown Tailored for traffic, environment, …
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Atlantic Interoperability Initiative to Reduce Emissions (AIRE) Tailored Arrivals Charles Buntin Ph.D. (Marc) June 11, 2008
Tailored Arrivals (aka: “Dynamic STAR”) • Tailored arrival — key features: • Continuous descent from cruise altitude to touchdown • Tailored for traffic, environment, … • Controller-to-aircraft communication by data link* • Definition of flight path in both time and space (4D) • Flight path through multiple centers • Benefits: • 590 Kg (777) – 1043 Kg (747) less fuel per flight (FTA) • 171 Kg (777) – 500 Kg (747) less fuel per flight (PTA) • Flight duration reduced by several minutes • Dramatically reduced VHF voice communication • Overall efficiency improved • Important step toward modernization of ATM *If ATC does not have data link, tailored arrivals can still be achieved by using pre-negotiated set of standard arrival procedures pre-stored in FMS.
Summary Statements for SFO TAs • A total 368 TAs have been flown from December 21st to June 5th at SFO • TAs at SFO receive no preferential treatment • From the week of December 10, 2007 to April 14, 2007 approximately 30% of all aircraft flying TAs flew full TAs. • 70% were partial TAs • Airlines believe that there is significant benefit achieved through partial TAs • Partial TAs – Broken off mostly due to traffic and weather • Procedures have been developed to rejoin aircraft to the TA that were broken off • The official Boeing benefits report will be release soon. • The FAA will use that report and other data for creating the official FAA business case
Today • Multiple changes from 3 Dec 2007 to 27 Jan 2008 • From local procedures department, requiring no change to the end-end procedure • You could publish it for voice a/c too, but for datalink …
Candidate Flights • From Europe • AAL57 LHR – MIA 777-200 • AAL63 CDG – MIA 767 • AAL69 MAD – MIA 767 • AFR090 CDG – MIA 747
Current CDA Profile • JORAY • OSOGY • ENVOY • YOSSI • MILSY Chartered (280/16000 or 250/13000) • BOYUR • HILEY • RUTLG -----/11000A • KAINS -----/11000B • CYLON 240/9000A • POZER 210/4800 • SHZAM • PABOY 180/3000 Entry FL240
CDA with Oceanic entry • SUMRS • NUCAR • STIFF • RAMJT • OSOGY • ENVOY • YOSSI • MILSY • BOYUR • HILEY • RUTLG -----/11000A • KAINS -----/11000B • CYLON 240/9000A • POZER 210/4800 • SHZAM • PABOY 180/3000
TA Profiles – Under Development March September Profile: Will Include transitions to both runways 8L and 9 September March Profile: Will Include transitions to both east and west runways
September TA Profile Landing East • NUCAR • STIFF • RAMJT ----/FL320A • OSOGY ----/FL320A • ENVOY • YOSSI • MILSY 280/16000B • BOYUR • HILEY • RUTLG -----/11000A • KAINS -----/11000B • CYLON 240/9000A • POZER 210/4800 • SHZAM • PABOY 180/3000 • LOC Approach 8L Landing Runway 9 • NUCAR • STIFF • RAMJT ----/FL320A • OSOGY ----/FL320A • ENVOY • YOSSI • MILSY 280/16000B • BOYUR • HILEY • RUTLG -----/11000A • KAINS -----/11000B • CYLON 240/9000A • POZER 210/4800 • SHZAM • GRITT 180/3000 • ILS or LOC Approach 9 AFR preferred
Flight Profile Description 1) Approx 1 hour prior to oceanic exit point, flight crew downlinks requestfor Tailored Arrival. CPDLC freetext: “RQST TA”
Flight Profile Description 2) If situation permits, Controller up-links Tailored Arrival clearance via CPDLC • [Atlantic X TA] At [SUMRS] cleared [ROUTE CLEARANCE] maintain FL[xxx] • [ROUTE CLEARANCE] includes lateral route, crossing restrictions, approach procedure, and runway assignment • Boeing ACAT captures ADS-C data at 6-min intervals, changing to 1-min intervals in the descent, for post-flight monitoring.
Flight Profile Description 3) Flight crew loads Tailored Arrival clearance into FMS and reviews • If acceptable, crew activates route in FMS and downlinks “wilco” • If unacceptable, crew downlinks “unable”.
Flight Profile Description 4) Crew receives updated cruise/descent winds, covering at least • Cruise wind @ last cruise point (e.g. SUMRS) • Descent wind bands, e.g. for 100 ft, FL100, FL 180, FL 250
Flight Profile Description 5) Aircrew selects a descent speed schedule of 280-300kts above 10,000ft
Flight Profile Description 6) Oceanic sector hands-off to MIA Center • CPDLC and ADS disconnected • On contact with MIA, aircrew checks in:“AAL123 on the Atlantic 1 TA” • On radar contact MIA Center controller advises:“AAL123 cleared via the Atlantic 1 TA. Maintain FL[current flight level]
Flight Profile Description 7) If controller wants to add speed control to allow Tailored Arrival, advises pilot to expect a restriction, e.g.“AAL123, Expect to descend at XXXkts”
Flight Profile Description 8) Controller issues descent clearance along cleared route:“AAL123 descend via the Atlantic 1 TA. Report leaving [current flight level]”If speed restriction is needed, e.g. “AAL123, Cleared to descend via Atlantic 1 TA, maintain XXXkts in the descent, Miami altimeter XXXX”Flight crew monitors the FMS for vertical profile compliance and reports leaving the assigned altitude.
Flight Profile Description 9) MIA Center (Sector 20) hands off to MIA ApproachOn contact with MIA Approach, aircrew checks in:“AAL 123 on the Atlantic 1 TA with ATIS Code”
Flight Profile Description 10) MIA Approach controller provides approach clearance e.g.“AAL123 cross PABOY at 3000ft. Cleared Localizer Runway 8L Approach”
Flight Profile Description 11) Instrument Approach intercept (localizer and/or glideslope) and landing
Outcome Technology Fuel burn & Emissions reduction b/c of more efficient vertical profile Direct Impact Properly equipped FMS Increased ability to perform optimal vertical profile Ability to use RNAV/VNAV and FMS executed profiles on approach Partial CDAs through procedures Tailored Arrivals 3D Paths: Arrival Management (3DPAM) Application CDA procedures Fuel burn & Emissions reduction b/c of more efficient lateral maneuvering More efficient maneuvering to meter fix Data Link Improved ATC ability to strategically manage aircraft Improved communication between ATC and Pilot (Workload related) Increased sector throughput from workload reduction Delay reduction because of increased arrival throughput En route Descent Advisor (EDA) Benefit Delay reduction b/c of increased sector throughput More optimized approach spacing into airport Arrival Management Benefit Mechanisms