Horizontal en-route flight efficiency

The horizontal en-route flight efficiency indicator is computed for three different trajectories: (1) the actual flown trajectory, (2) the planned trajectory according to the flight plan and (3) the shortest constrained route provided by the Network Manager. It is expressed as a ratio of distances and is therefore an average per distance within a given airspace (distance achieved per distance flown).

  • The shortest constraint route (SCR) reflects the effect of the constraints imposed by ANSPs (route structure, airspace availability, etc.) on flight planning. It is not influenced by weather conditions or specific airline considerations, and it sets the limits within which the airlines can optimise.

Horizontal en-route flight efficiency

Horizontal en-route inefficiencies impact in terms of fuel burn and emissions. The lower the efficiency, the higher the additional fuel consumption and emissions. The results are available for download in our data repository.

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