Mo. Rev. Stat. § 305.270: Dependent upon reciprocity by adjoining state.

Sections 305.240 to 305.270 shall not apply unless the laws of such adjoining state shall permit this state and its political subdivisions to acquire, establish, construct, own, control, lease, equip, improve, maintain, and operate airports, or restricted landing areas, or other air navigation facilities therein, with all privileges, rights and duties applicable to such aeronautical projects in such adjoining state.