Problem Objective Find Cost minimizing ( or profit maximizing assignment of aircraft fleets to scheduled flights such that maintenance requirements are satisfied. conservation of flow (balance) of aircraft is achieved, and the number of aircraft used does not exceed the number available (in each fleet type 2/212021 Barnhart 1.206J/16.77J/ESD. 15J2/21/2021 Barnhart 1.206J/16.77J/ESD.215J 5 Problem Objective Find: – Cost minimizing (or profit maximizing) assignment of aircraft fleets to scheduled flights such that maintenance requirements are satisfied, conservation of flow (balance) of aircraft is achieved, and the number of aircraft used does not exceed the number available (in each fleet type)