Environment - Lithuania

PRB monitoring

Lithuania registered a KEA performance of 11.41 % compared to its target of 13.13% and contributed positively towards achieving the Union-wide target.
KEP and KES both improved in comparison with 2024. The improvement in KES shows that Lithuania has improved the element of horizontal flight efficiency that is under its control.
VFE of the actual trajectory was at 70.07%, which was worse than the Union-wide average.
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)

Focus on en route performance

KEA

Lithuania has seen an improvement in the values of KEA and the corrected KEA for the influence of the war in Ukraine in the period 2023 to 2025. The values are 13.14% in 2023, 12.19% in 2024 and 11.41% in 2025 for KEA; 4.52% in 2023, 4.20% in 2024 and 3.98% in 2025 for the corrected KEA. These values place Lithuania as 28^th for KEA and 27^th for the corrected KEA.

Nonetheless, the contribution to the additional distance in the SES area is 1.25% (10^th).

Regarding the assessment of the achieved level of actual performance in the environment KPA, the NSA reports: “Considerable attention is being paid to the Environment Key Performance Area during the RP4 period. It should be noted that the consequences of the war in Ukraine, the EU sanctions imposed on Russia and Belarus, the counter-sanctions, and the increased regional tensions are the main factors affecting the Environment Key Performance Area and its indicators within the Vilnius FIR.

In 2025, through joint efforts, compliance with the Environment performance indicator was successfully ensured.”

Regarding the implementation of major operational or structural changes during the calendar year impacting performance in this key performance area, the NSA reports: “Lithuania’s ANSP (ON) has implemented a significant number of technological measures that have positively contributed to the Environment Key Performance Area (KPA) and continues to apply tactical measures in day-to-day operations (see relevant sections below). These actions are considered to be within the control of the ANSPs.

Further improvement of the Horizontal En-Route Flight Efficiency Key Performance Indicator (KEA) remains limited due to factors beyond the ANSP’s control, including meteorological conditions, airspace user operational decisions, geopolitical constraints, and the continuing impact of the regional security situation.”

Regarding progress on the implementation of the measures committed to in the ERNIP, the NSA reports: “Measures according to the roadmap defined in the PBN 2020 plan (covering the period 2020–2030);

Implementation of the Baltic FAB cross-border Free Route Airspace (FRA) since 2022;

Planned cross-border FRA operations with neighboring countries (NEFAB);

Implementation of cross-border FRA operations between Baltic FRA and South-East Europe FRA (FRACZECH), effective November 2024;

Lithuanian airspace reconfiguration project, including the removal of ATS routes within the Vilnius FIR, effective June 2024;

Revised SIDs/STARs for Vilnius, Kaunas, and Palanga CTR/TMA, also effective June 2024;

Deployment of the latest version of the Airspace Management (ASM) tool LARA (version 5.0), implemented in 2025;

Continuous application of tactical measures by the ANSPs, including ATC actions and civil-military coordination, in daily operations.”

Regarding the follow up of the remedial measures indicated in the previous monitoring report(s), the NSA reports: “The ANSP ensured the provision of the most efficient service possible without generating delays. The Environment KPI for 2025 was achieved, demonstrating the effectiveness of the measures implemented.”

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: “Measures implemented and planned to improve the average actual horizontal en-route flight efficiency indicator (KEA) within the Vilnius FIR route airspace include the following:

Implementation of measures in accordance with the roadmap defined in the PBN 2025 Plan, which was amended in 2025;

Implementation of Baltic FAB cross-border Free Route Airspace (FRA) operations since 2022;

Planned implementation of cross-border FRA operations with neighbouring countries within the NEFAB framework;

Further development and implementation of cross-border FRA operations between adjacent EU airspace areas in order to enhance flight trajectory efficiency and optimise airspace utilisation.

The National Supervisory Authority (NSA) will oversee the implementation of these measures through regular performance monitoring activities, oversight audits, and assessments of compliance with applicable EU regulatory requirements. The NSA will also monitor the achievement of established performance targets and review the effectiveness of implemented measures in improving flight efficiency within the Vilnius FIR.”

KES

Implementation of measures in accordance with the roadmap defined in the PBN 2025 Plan, which was amended in 2025;

Implementation of Baltic FAB cross-border Free Route Airspace (FRA) operations since 2022;

Planned implementation of cross-border FRA operations with neighbouring countries within the NEFAB framework;

Further development and implementation of cross-border FRA operations between adjacent EU airspace areas in order to enhance flight trajectory efficiency and optimise airspace utilisation.

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: “The following initiatives were implemented or are planned in order to improve the vertical flight efficiency of actual en-route trajectories:

Implementation of measures in accordance with the roadmap defined in the PBN 2025 Plan, which was amended in 2025;

Implementation of Baltic FAB cross-border Free Route Airspace (FRA) operations since 2022;

Planned implementation of cross-border FRA operations with neighbouring countries within the NEFAB framework;

Further development and implementation of cross-border FRA operations between adjacent airspace areas in order to enhance flight trajectory efficiency, optimise airspace utilisation, and support more efficient vertical flight profiles.

The National Supervisory Authority (NSA) intends to monitor the effectiveness of these initiatives through regular performance monitoring activities, analysis of relevant environmental performance indicators, and oversight audits of the ANSP. In addition, the NSA will review operational data, trend analyses, and reports related to flight efficiency in order to assess whether the implemented measures contribute to continuous improvement of vertical flight efficiency performance.”

Civil-Military dimension

Focus on Civil-Military dimension

Effective use of reserved or segregated local airspace

LITHUANIA reports a ratio of 100%

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: “The performance level for Environment PI #9 remained at 100% in 2025, indicating the effective application of Flexible Use of Airspace (FUA) principles and efficient civil-military coordination. No additional initiatives were required during the reporting period, as the maximum performance level was maintained. The NSA will continue to monitor performance through regular oversight of airspace management arrangements, performance data and coordination processes between civil and military stakeholders to ensure the continued effective use of reserved or segregated airspace. ----“

Rate of planning via available airspace structures

LITHUANIA reports, the ratio of planning via available airspace structures is: 97% (via available restricted & segregated airspaces)

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: “The performance achieved for Environment PI #10 (Rate of planning via available airspace structures) amounted to 97% in 2025. This result reflects the continued availability of airspace structures supporting efficient flight planning and the effective application of Flexible Use of Airspace (FUA) principles through close civil-military coordination. The achieved performance was supported by established airspace management processes, including the timely activation and release of reserved or segregated airspace, regular assessment of airspace requirements, and the publication of relevant airspace information to airspace users. These arrangements contributed to maintaining a high level of flight planning through available airspace structures. No significant deficiencies affecting performance were identified during the reporting period. Nevertheless, the ANSP and relevant stakeholders will continue efforts to optimise the availability and utilisation of airspace structures, where operationally feasible. NSA will monitor performance through regular review of performance monitoring data, airspace management reports, and coordination arrangements between civil and military. The difference between the achieved value and the theoretical maximum level reflects operational and military airspace requirements that occasionally limited the availability of certain airspace structures.”

Rate of using available airspace structures

LITHUANIA reports, the ratio of the use of the available airspace structures is: 83% (via available restricted & segregated airspaces)

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: “The performance achieved for Environment PI #11 (Rate of using available airspace structures) amounted to 83% in 2025. The achieved level reflects the extent to which available airspace structures were utilised by airspace users in operational flight planning and execution. Performance was supported by the continued application of Flexible Use of Airspace (FUA) principles, effective civil-military coordination, and the timely availability of airspace structures through established airspace management processes. The availability of relevant airspace structures was regularly communicated to airspace users and the Network Manager to facilitate their operational use. The achieved value was influenced not only by the availability of airspace structures but also by factors outside the direct control of the ANSP, including airspace users’ route selection preferences, network operational constraints, traffic distribution patterns and temporary airspace requirements. No specific deficiencies in the airspace management process were identified during the reporting period. Nevertheless, efforts will continue to maximise the operational availability and attractiveness of airspace structures, where feasible, in coordination with civil and military stakeholders and the Network Manager. NSA will continue to monitor performance through regular analysis of performance indicator trends, airspace utilisation data, airspace management reports and Network Manager information. Particular attention will be paid to the relationship between airspace availability and actual utilisation in order to identify opportunities for further improving flight efficiency and environmental performance.”