TY JOUR TI ECONOMIC AND MATHEMATICAL ANALYSIS OF THE IMPACT OF THE ON OPERATING COSTS IN THE MANAGEMENT OF FLIGHT PROFILES OF NARROW-BODY AIRCRAFT KW Cost Index KW economic efficiency KW fuel consumption KW operating costs KW flight profile management KW narrow-body aircraft KW flight mode optimization KW and air transport economics. JO JOURNAL OF MONETARY ECONOMICS AND MANAGEMENT AU Snitko, A.I. AU Sokolov, O.A. PY 2026 IS 0 PB ITBO University