TY JOUR TI Economic Model of Predictive Maintenance for Aerodrome Electrical Lighting Equipment Considering Failure Criticality KW airport KW aerodrome lighting equipment KW electrical lighting equipment KW operating costs KW ALCMS KW LED KW cost optimization JO Journal of Applied Research AU Sagitov, D.I. AU Eryomina, E.V. AU Kitaeva, T.M. PY 2026 IS 0 PB ITBO University