Trajectory Based Operations (TBO) represents a shift from clearance-based to trajectory-based control. Aircraft will fly negotiated trajectories and air traffic control moves to trajectory management. The roles of pilots/controllers will evolve due to the increase in automation support. The focus of TBO is primarily en route cruise. Additional information about TBO operational capabilities can be found in the National Airspace System (NAS) Enterprise Architecture

Activity: Separation Management, High Altitude

Operational Improvement

  • 108209: Increase Capacity and Efficiency Using Area Navigation (RNAV) and Required Navigation Performance (RNP)

Description

  • Identifies cognitive support and displays change requirements necessary for a transition to a high-altitude specialty that addresses the goals for capacity and organization excellence.

FY 2012

  • Completed: Conducted integrated Human-in-the-Loop simulation of high altitude concept

Activity: Oceanic Tactical Trajectory Management

Operational Improvement

  • 102108: Oceanic In-trail Climb and Descent

Description

  • Develop an initial mid-term concept for Oceanic Trajectory Management in Four Dimensions. A key objective of this concept is to use trajectory-based operations to improve fuel efficiency, system predictability, and performance by enabling airlines and other operators to flight plan and fly closer to their optimal (or preferred) 4D trajectories while in oceanic airspace.

FY 2012

  • Completed: Conducted Automatic Dependent Surveillance–Contract (ADS-C) Climb/Descend Procedure (CDP) automation transition

FY 2013

  • Conduct Oceanic Conflict Advisory Tool operational trial

FY 2014+

  • ADS-C CDP Automation Requirements
  • ADS-C CDP Automation Software Release
  • Controller Readiness
  • International Civil Aviation Organization Procedure Change

Activity: Capacity Management - NextGen Distance Measuring Equipment (DME)

Operational Improvement

  • 108209: Increase Capacity and Efficiency Using RNAV and RNP

Description

  • Provides the necessary equipment enhancements, relocation, and replacements to ensure that DME facilities are available.

FY 2012

  • Completed: First article (design approval, test plan, procedures and safety assessment of contract data requirements list)

Activity: Separation Management, Modern Procedures (Separation Automation Enhancements, Data-Side and Radar-Side)

Operational Improvement

  • 108209: Increase Capacity and Efficiency Using RNAV and RNP
  • 102137: Automation Support for Separation Management

Description

  • Performs pre-implementation activities necessary to transition separation management automation enhancements for implementation and continued functionality for Performance Based Navigation route eligibility checking for inclusion in En Route Automation Modernization Release 3.

FY 2012

  • Completed: Evaluated trajectory model enhancements

FY 2013

  • D-position CHI Mini-Operational evaluation
  • Conflict Probe and Trajectory Model Algorithm Improvements Evaluations

FY 2014+

  • Complete Requirements Documents for Enhancements to Trajectory Modeling Accuracy and Conflict Alert and Detection Algorithm