(a) Except as provided in subsection (b), in any city having a population of more than sixty-five thousand (65,000) in which a board of park commissioners has been established pursuant to Kan. Stat. Ann. § 13-1346, all powers, jurisdiction and control over municipal airports or municipal fields for aviation purposes otherwise vested in the governing body of such city shall be vested in such board of park commissioners. Such board of park commissioners is hereby authorized to issue, as provided by law, general bonds of the city for the purpose of purchasing, leasing, developing and equipping municipal airports and fields for aviation purposes. Such board of park commissioners is hereby further authorized to levy an annual tax not exceeding one-half (1/2) mill for the support, maintenance and operation of municipal airports or fields for aviation purposes.

(b) In any city in which an airport authority has been established pursuant to Kan. Stat. Ann. § 3-162, all powers, jurisdiction and control over municipal airports or municipal fields for aviation purposes otherwise vested in the governing body or board of park commissioners of such city shall be vested in such airport authority. The governing body of the city by a two-thirds vote of the members thereof, is hereby authorized to issue general obligation bonds of the city for the purpose of purchasing, leasing, developing and equipping municipal airports and fields for aviation purposes. The governing body of the city by a two-thirds vote of the members thereof is hereby further authorized to levy an annual tax not exceeding one-half (1/2) mill for the support, maintenance and operation of municipal airports or fields for aviation purposes.