The acceptance, receipt, and expenditure of all federal moneys heretofore made by any political subdivision of this state and all contracts and agreements heretofore made with the federal government or agencies thereof by any political subdivision of this state for the acquisition, planning, construction, enlargement, improvement, maintenance, equipment, or operation of airports and other air navigation facilities and sites therefor are hereby legalized and made valid and effective.
K.S.A. 3-603