The Client
Croatia Control
The Challenge
The SIDs and STARs at the nine major airports in Croatia relied on out-dated sensor-based navigation and were not always preferred by ATCOs due to conflicting routes. Croatia Control had a desire to implement new Performance Based Navigation (PBN) SIDs and STARs to modernise the airspace within the TMAs to move away from the reliance of ground navigation aids and to procedurally deconflict departure and arrival routes.
Before taking any major implementation decisions Croatia Control wanted a better understanding of the benefits of the PBN SIDs and STARs in terms of sector capacity, safety and efficiency.
Our Approach
Our highly experienced Simulation team travelled to Croatia to meet with ANSP management and get an understanding of the anticipated benefits of PBN implementation. A series of site visits was also undertaken to get a clear understanding of local operations and to collect data.
A high fidelity fast time simulation model was built using the AirTOp software tool. Both the current and proposed route structure was modelled to provide a relative comparison of performance. This enabled the likely sector capacity of each sector to be determined, the safety considerations of the proposed PBN routes to be identified, and any change in efficiency above current operations to be quantified.
To being additional insight and as a further innovation, Think also developed a customised workload model to assess the controller workload of each TMA sector based on outputs of the FTS model. The workload model allowed Think to further refine the sector capacities of each sector.
The Outcome
Throughout the project a web-based results dashboard was used to provide Croatia Control management with a continuous view of the project progress and expected benefits of the new routes.
Results were framed in language that could be understood and contextualised by all stakeholders.
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