Time Based Flow Management1 enhances system efficiency and improves traffic flow by leveraging the capabilities of the Traffic Management Advisor decision-support tool, a system that is already deployed to all contiguous U.S. Air Route Traffic Control Centers (ARTCC).
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1 The Arrival Interval Management using Ground Automation increment, which was included in the FY 2012 Appendix B, is not included in this timeline because it is in the concept maturity phase and the implementation timeline is being revisited.

Phases of Flight

A diagram depicting the Phases of Flight: Flight Planning; Pushback, Taxi, Takeoff, Domestic and Oceanic Cruise, Descent, Final Approach, and Landing, Taxi. OI 1: 104115 applies to the Takeoff, Domestic and Oceanic Cruise, and Final Approach Phases of Flight. OI 2: 104117 applies to the Pushback, Takeoff, Final Approach, and Landing Phases of Flight.
OI 3: 104120 applies to the Domestic and Oceanic Cruise Phase of Flight. OI 4: 104123 applies to the Pushback and Final Approach Phases of Flight.

Timeline for Achieving OIs and Capabilities

OI 104115: Current Tactical Management of Flow in the En Route for Arrivals/Departures (2010-2014) � The current timeline spans from FY 2012 to FY 2014.  Implement TMA�s Adjacent Center Metering Capability at Additional Locations is currently in development and will be available in FY 2014.  Implement TMA at Additional Airports is currently in development and will be available in FY 2014. OI 104117: Improved Management of Arrival/Surface/Departure Flow Operations (2015-2018) � The current timeline spans from FY 2012 to FY 2015.  Integrated Departure/Arrival Capability (IDAC) is currently in development and will be available in FY 2015. OI 104120: Point-in-Space Metering (2014-2018) � The current timeline spans from FY 2012 to FY 2014.  Extended Metering is currently in development and will be available in FY 2014.  Arrival Interval Management Using Ground Automation is currently in development and will be available in FY 2014. OI 104123: Time-Based Metering Using RNAV and RNP Route Assignments (2012-2016) � The current timeline spans from FY 2012 to FY 2013.  Use Area Navigation (RNAV) Data to Calculate Trajectories Used to Conduct TBM Operations will be available in FY 2013.

Selected Work Activities

1 OI 104115: Current Tactical Management of Flow in the En Route for Arrivals/Departures (2010-2014)

Budget

  • Supported by NextGen Time Based Flow Metering (TBFM)

FY 2012

  • Completed: Developed site integration and deployment plan
  • Completed: Implemented Traffic Management Advisor's (TMA) Adjacent Center Metering (ACM) Capability at Additional Locations:
    • SFO

FY 2013

  • Develop site evaluation plan for Implementation of TMA at Additional Airports:
    • CLE
    • DCA
    • BWI
  • Develop site evaluation plan for Implementation of TMA's ACM Capability at Additional Locations:
    • IAD

FY 2014+

  • Implement TMA at Additional Airports:
    • BWI
    • CLE
    • DCA
    • HPN
    • TEB

  • Implement TMA's ACM Capability at Additional Locations:
    • ATL
    • LAX
    • SAN
    • IAD

2 OI 104117: Improved Management of Arrival/Surface/Departure Flow Operations (2015-2018)

Budget

  • Supported by NextGen TBFM

FY 2012

  • Completed: Initiated software development

FY 2013

  • Develop integrated test strategies

FY 2014+

  • Declare Integrated Departure/Arrival Capability (IDAC) operationally available at an ARTCC and an airport

3 OI 104120: Point-in-Space Metering (2014-2018)

Budget

FY 2012

  • Completed: Developed course design material for an improved training program for traffic management
  • Completed: Updated concept and requirements document
  • Completed: Began development of flight deck interval management minimum operational performance standards

FY 2013

  • Identify key site for Extended Metering
  • Complete integrated test strategy for Arrival Interval Management Using Ground Automation
  • Conduct system design technical interchange meeting for Arrival Interval Management Using Ground Automation

FY 2014+

  • Deliver improved Traffic Management Coordinator training to traffic management
  • Declare arrival interval management using ground automation available in the National Airspace System (NAS)

4 OI 104123: Time-Based Metering (TBM) Using Area Navigation (RNAV) Required Navigation Performance (RNP) Route Assignments (2012-2016)

Budget

  • Supported by NextGen TBFM

FY 2012

  • Completed: Initiated software development

FY 2013

  • Conduct integrated testing
  • Declare TBM using RNAV & RNP route data operationally available at an ARTCC

Descriptions of OIs and Capabilities

In Concept
Exploration
In
Development
Available
at least one site
1 OI 104115: Current Tactical Management of Flow in the En Route for Arrivals/Departures
Proper spacing and sequencing of air traffic maximizes NAS efficiency and capacity in the arrival and departure phases of flight.

Task Force: Cruise

In Development

Implement TMA's ACM at Additional Locations
To expand the benefits of TBM and TBFM's other advanced flow management capabilities, ACM will be implemented at the following additional locations:
LAXACM from ZAB;
SFOACM from ZSE, ZOA, ZLA and ZLC;
SANACM from ZLA and ZOA;
ATLACM from ZDC and ZHU; and
IADACM from ZNY.

Task Force: Expand Use of TBM (24)

In Development

Implement TMA at Additional Airports
To expand the benefits of TBM and TBFM's other advanced flow management capabilities, TBFM will be implemented at the following additional locations: BWI, CLE, DCA, HPN, SAN and TEB.

Task Force: Expand Use of TBM (24)

2 OI 104117: Improved Management of Arrival/Surface/Departure Flow Operations
This integrates advanced arrival/departure flow management with advanced surface operation functions to improve overall airport capacity and efficiency.
In Development

IDAC
IDAC, the first increment of this OI, increases NAS efficiency and reduces delays by providing decision-making support capabilities for departure flows. IDAC automates the process of monitoring departure demand and identifying departure slots. It also deconflicts the departure times between airports with traffic departing to common points in space and provides situational awareness to air traffic control tower personnel so they can select from available departure times and plan their operations to meet these times. The results of these enhancements are more efficient departure flows and less delay.

3 OI 104120: Point-in-Space Metering
The air navigation service provider uses scheduling tools and trajectory-based operations to assure smooth flow of traffic and increase the efficient use of airspace. The following capabilities comprise elements of the interval management concept, which is designed to improve aircraft spacing by precisely managing the intervals between aircraft whose trajectories are common or merging. This concept increases airspace throughput while enabling aircraft to reduce fuel burn and environmental impacts.
In Development

Extended Metering
This capability will extend the metering horizon beyond the nominal distance used today. Currently, metering is conducted approximately 150-200 nautical miles from the adapted arrival airport, though this distance is extended during ACM operations, which are conducted at several locations. ACM will be implemented at additional locations � see sub-section 5.1.2.4.1. Building upon the ACM capability, Extended Metering will increase the distance from the airport where metering will be conducted without significant degradation in the accuracy of aircraft-specific slot times to the meter reference points. This capability will provide flow-deconfliction for metered aircraft at the meter reference points (in addition to meter fixes). The specific distances and locations where extended metering operations will be implemented will be based on operational need and benefits. This capability will be leveraged in the future to support end-to-end metering, meaning metering through each phase of flight.

Additionally, the technical infrastructure that will be developed for this increment will be scalable to support additional metering initiatives planned for subsequent implementation.

In Development

Arrival Interval Management Using Ground Automation
The ground-based component of Interval Management (Ground-Interval Management�Spacing) provides automation changes that will enable en route controllers to use speed control to maneuver aircraft to meet metering times while providing the opportunity for aircraft to fly optimized descents to the meter fix (the Terminal Radar Approach Control boundary).

4 OI 104123: TBM Using RNAV and RNP Route Assignments
RNAV, RNP and TBM provide efficient use of runways and airspace in high-density airport environments. Metering automation will manage the flow of aircraft to meter fixes, thus permitting efficient use of runways and airspace.
In Development

Use RNAV Data to Calculate Trajectories Used to Conduct TBM Operations
In addition to the en route RNAV routes, which are already used to calculate trajectories, the Terminal Radar Control Center RNAV routes for both Standard Instrument Departures and Standard Terminal Arrival Routes will be used to calculate the terminal component of aircraft trajectories.