• SJU reference # PJ.09-03 /Release 2019
  • Stakeholders
  • Benefits Cost-efficiency
    Operational efficiency
  • Status In the pipeline

The NOP developed during SESAR 1 is a powerful tool to DCB planning processes. It supports the collaborative ATM planning process by enabling stakeholders to develop a common view of the planned network situation. Further development of automated tools, for example to monitor and optimise operations, is underway in SESAR 2020 in order to identify and rectify constraints in the network. Network operations planning and execution follows an agreed set of rules and procedures, which guide DCB activities and user driven performance preferences.

In this context, SESAR is progressing the notion of collaborative constraint management in four dimensions (4D) – latitude, longitude, altitude and time. The aim is to consolidate DCB procedures in order to minimise the adverse impact on airspace user operations and on overall network performance. For example, in place of the current slot allocation procedure based on first-planned, first-served; the solution supports a coordinated 4D constraints management process, which arbitrates between the owners of the constraint, the actors involved in the solution and the overall network performance needs. It allows airports, air traffic control, the Network Manager and airspace users to agree on reconciliation measures. In case of multiple conflicting
constraints, a ‘multiple constraints resolver’ is designed to provide decision support to identify the optimum solution to satisfy all constraints.

SJU references #PJ.09-03 Wave 2


  • Enhanced safety
  • Reduced fuel consumption and emissions
  • Optimised en-route, TMA and airport capacity
  • Enhanced predictability and punctuality
  • Improved operational and cost-efficiency