Section 42-5-122 - Public purpose - County and municipal purpose(a) The acquisition of any land or interest in land pursuant to this chapter, the planning, acquisition, establishment, development, construction, improvement, maintenance, equipment, operation, regulation, protection, and policing of airports and air navigation facilities, including the acquisition of avigation easements or the acquisition or elimination of airport hazards, and the exercise of any other powers granted by this chapter to municipalities and other public agencies, to be severally or jointly exercised, are declared to be public and governmental functions, exercised for a public purpose, and matters of public necessity, and in the case of any county, are declared to be county functions and purposes as well as public and governmental, and in the case of any municipality, other than a county, are declared to be municipal functions and purposes as well as public and governmental.(b) All land and other property and privileges acquired and used by or on behalf of any municipality or other public agency in the manner and for the purposes enumerated in this chapter shall and are declared to be acquired and used for public and governmental purposes and as a matter of public necessity, and, in the case of a county or municipality, for county or municipal purposes, respectively.(c) No action or suit shall be brought or maintained against any municipality, or its officers, agents, servants or employees, in or about the construction, maintenance, operation, superintendence, or management of any municipal airport.(d) Nothing in this section shall be construed to prohibit any action, suit, or proceeding by or on behalf of any holder of bonds of a municipality previously or hereafter issued for airport purposes of whatever nature, pursuant to this chapter, or pursuant to any other section or chapter of this code, or any other general or special law or charter.Acts 1957, ch. 375, § 17; 1961, ch. 322, § 5; T.C.A., § 42-326.