• Journal of Advanced Navigation Technology
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• v.28 no.5
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• pp.594-600
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• 2024

With the operation of the Korean satellite-based augmentation System (KASS), it has become possible to develop and implement localizer performance with vertical guidance (LPV) instrument approach procedures. In this study, we developed an LPV procedure for Runway 18 at Ulsan Airport, where the installation of an instrument landing system (ILS) is unable due to obstacles, and examined the potential reduction in flight cancellations. The study results suggest that, when developing an LPV instrument approach procedure, the decision altitude would be 380 feet, and the visibility minimum would be 1,200 meters. Consequently, it is expected that flight cancellations for Runway 18, based on 2023 cancellation data, could be reduced by 92% under the given visibility and ceiling conditions if LPV instrument approach procedure is developed. Therefore, the development and operation of the LPV instrument approach procedure for Runway 18 at Ulsan Airport is deemed essential.