TY JOUR TI Methodology for assessing the impact of advanced automatic control modes (RNP, CDA, FLC) on reducing direct operating costs (DOC) of an aircraft KW Direct Operating Costs (DOC) KW RNP (Required Navigation Performance) KW CDA (Continuous Descent Approach) KW FLC (Flight Level Change) KW Fuel efficiency KW Automatic flight control KW economic assessment KW aviation operation KW flight profile optimization JO JOURNAL OF MONETARY ECONOMICS AND MANAGEMENT AU Yashunin, D.B. AU Bashirov, A.E. AU Sokolov, O.A. PY 2026 IS 0 PB ITBO University