Environment - Slovenia

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PRB monitoring

  • Slovenia registered a KEA performance of 1.58% compared to its target of 1.70% and contributed positively towards achieving the Union-wide target. The NSA states a reason for meeting the target is due to cross border FRA is fully implemented.

  • Both KEP and KES improved in comparison with 2024, however the levels are still below previous years.

  • VFE of the actual trajectory was at 76.59%, which was above the union-wide performance.

  • No airports are included in the performance plan for monitoring.

En route performance

Horizontal flight efficiency of the actual trajectory (KEA) (KPI#1), of the last filed flight plan (KEP) (PI#1), shortest constrained route (KES) (PI#2) and vertical flight efficiency of the actual trajectory (VFE) (PI#3)

KEA

The value of KEA for Slovenia has improved from 1.77% to 1.58% between 2025 and 2024. Similarly, the value of the corrected KEA has improved from 1.66% to 1.5%.

These values rank Slovenia as 3rd in terms of KEA and 6th in terms of corrected KEA.

Slovenia is the one least contributing (i.e., the “best”) to the additional distance in the SES area, with a value of 0.35%.

Regarding the assessment of the achieved level of actual performance in the environment KPA, the NSA reports: “Cross border FRA fully implemented.”

Regarding the implementation of major operational or structural changes during the calendar year impacting performance in this key performance area, the NSA reports: “No”

Regarding progress on the implementation of the measures committed to in the ERNIP, the NSA reports: “All done.”

Regarding the identification and analysis by the NSA of the underlying reasons or circumstances having led to the performance target not being achieved, the NSA reports: “Shortest flight planning options already close to optimum, with some RAD restrictions in place.”

Regarding remedial measures that have been / will be taken by the ANSP to rectify the situation, the NSA reports: “Cross border free route implemented with all the neighbours.”

KEP

Regarding initiatives implemented or planned that will improve this PI and how does the NSA intend on monitoring their effectiveness on performance, the NSA reports: “Users have the option to plan the shortest flight route, but this is not fully utilized.”

KES

Regarding initiatives implemented or planned that will improve this PI and how does the NSA intend on monitoring their effectiveness on performance, the NSA reports: “Users have the option to plan the shortest flight route, but this is not fully utilized.”

Vertical flight efficiency

Regarding initiatives implemented or planned that will improve this PI and how does the NSA intend on monitoring their effectiveness on performance, the NSA reports: “FLAS conditions being coordinated with adjecent ACCs, but traffic complexity is high.”

Civil-Military dimension

Effective use of reserved or segregated local airspace

SLOVENIA reports a ratio of 58%. - Total number of hours allocated & notified to NM: 1,483 - Total number of hours used: 865

Rate of planning via available airspace structures

SLOVENIA reports, no data available.

Regarding initiatives implemented or planned that will improve this PI and how does the NSA intend on monitoring their effectiveness on performance, the NSA reports: “Ljubljana ACC is not applying rerouting scenarios when areas are active, done tacticaly. Ratios included from NM data.”

Rate of using available airspace structures

SLOVENIA reports, no data available.

Regarding initiatives implemented or planned that will improve this PI and how does the NSA intend on monitoring their effectiveness on performance, the NSA reports: “Ljubljana ACC is not applying rerouting scenarios when areas are active, done tacticaly. Ratios included from NM data.”