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SOCM-2 Seminar
Data Link Advanced Operations
Presented By: Dennis Addison, FAADate: February 8, 2012
Oceanic Briefing Slide 2
KSFO Tailored Arrival (TA) Trials
• Initial TA Trials began in 2006– Early Morning Traffic with little airport demand.– UAL aircraft only
• Latest TA Trials began December 2007– Expanded beyond early morning flights– Refined arrival routing and renamed the arrival– Added additional operators– Reduced coordination requirements for controllers
Oceanic Briefing Slide 3
KSFO Tailored Arrival Profiles• Determining the TA
profile
CREANCINNY
3657N12335W AOB FL250
RAINS AOB FL200
PIRAT AOB 150
3722N12223W AOA 060
BRINY AOB 120
OSI
MENLOAOA 040
Drawings not to scale
KSFOMENLOOSI3722/12223BRINYPIRATRAINS3657/12335CINNYCREAN
•Initial Altitude•Descent Speed•Winds•Aircraft type
Oceanic Briefing Slide 4
Profile Development Goals
• Meet ATC requirements– Minimum IFR Altitudes– Noise Abatement– ATC Altitude Crossing Requirements
• Continuous Descent• Idle Power Descent• Keep aircraft within the expected descent
profile.
Oceanic Briefing Slide 5
TAILORED ARRIVAL UPLINK
A COMPLEX 4D TRAJECTORY PROFILE CLEARANCE IS UPLINKED TO THE AIRCRAFT FMS
Oceanic Briefing Slide 6
Tailored Arrival Route Clearance
(169) (freetext) PACIFIC TWO TA
• Element One: Clearance Name
Oceanic Briefing Slide 7
Tailored Arrival Clearance
• Controller constructs the TA clearance using MOPS Element 83 Route Clearance
Oceanic Briefing Slide 8
Tailored Arrival Clearance•
• •
KSFO
28R
ILS28R MENLO
CINNY 3657N12335W/F250B RAINS/F210B PIRAT/N0250A150B BRINY/N0250A120B 3722N12223W/A060A OSI MENLO/N0210A040A
Oceanic Briefing Slide 9
Tailored Arrival Route Clearance
(169) (freetext) PACIFIC TWO TA(83) AT COSTS CLEARED ROUTE(19) MAINTAIN F330
• The clearance is constructed to clear the flight via the TA route and to maintain current altitude.
• The clearance is probed for conflicts and then sent to the aircraft.
Oceanic Briefing Slide 10
TAILORED ARRIVAL UPLINK
• Tailored Arrivals enable VNAV path to the Localizer.
• FMS determines most efficient aircraft descent profile
Oceanic Briefing Slide 11
TA Radar Vectoring/Routing• The goal of the controller is to let the aircraft
fly the TA without intervention, however at times it may be necessary to change an aircraft’s flight path. To do this, the controller must:
– Issue a radar vector for traffic.
– When the vector is complete or to shortcut an aircraft, the following instructions are issued:
"Call Sign, cleared direct (waypoint on the TA) the remainder of the Pacific Two TA. Comply with Restrictions."
Oceanic Briefing Slide 12
Termination of Tailored Arrival• At any time the Tailored Arrival may be
terminated by the aircraft or ATC.
• If the flight crew replies “UNABLE” to any TA clearance, or requests cancellation of the TA, the TA is terminated for that flight.
• If the Tailored Arrival is terminated.– Advise the aircraft “Tailored Arrival is
terminated”. Issue a new Route and Altitude clearance to the aircraft.
• Notify the downstream controller of OTA cancellation.
Oceanic Briefing Slide 13
Fuel Savings from Top of Descent Cruise to Landing
• Fuel consumption was calculated using the Boeing Climbout Program (BCOP) for low speed performance below 10,000 ft altitude.
• Fuel consumption above 10,000 ft altitude was calculated using the Boeing INFLT tool for cruise and descent.
• The vertical profile generated from BCOP and INFLT was matched to the mean descent paths of the collective ANOMS8 radar data.
777-200/GE90-85B 747-400/PW4056
Full TA 1,303 lbs 2,291 lbs
Partial TA
379 lbs 1,100 lbs
Dynamic Airborne Reroute Procedure (DARP)
Oceanic Briefing Slide 15
Dynamic Airborne Reroutes
• Allows Airborne Rerouting of Aircraft When Winds Indicate a More Fuel Efficient Route is Available
• Reduce Operating Costs by Taking Advantage of Updated Winds
• FANS and Air Traffic Services Inter-facility Data Communications (AIDC) Required
• Ongoing Trials in the South Pacific
Oceanic Briefing Slide 16
User Preferred Route
Dynamic Reroute
Dynamic Airborne Reroute Procedure
ZOA
AOC
Msg 24 Route Req
UM83 Route Clrce
AIDC New Route
Auckland
Oceanic Briefing Slide 17
Dynamic Airborne Reroutes
NTTT
NZZO NFFF
YBBB
DARPS have saved flights 2000 pounds of fuel burn and 7 minutes flying time
ZSE, ZOA, ZLA
RJTG
Oceanic Briefing Slide 18
ADS-C CDP ClearancesProcedure is based on in-trail Distance Measuring Equipment
(DME) rules in ICAO Doc 4444, paragraph 5.4.2.3.2.
*Near Simultaneous ADS-C Demand Reports*Climb/Descend an aircraft through the altitude of a blocking aircraft
Oceanic Briefing Slide 19