%0 Journal Article %T Assessment of the economic efficiency of combining navigation tools to ensure the reliability of air navigation in special conditions %A Sagitov, D.I. %A Titova, K.A. %A Sidorkina, A.E. %K air navigation, Arctic, oceanic flights, payback period, sparsely populated areas, cost efficiency %J Journal of Applied Research %D 2026 %N 0 %P 0 %I ITBO University