Tenn. Code § 42-5-117
All bonds issued prior to March 17, 1961, and all proceedings taken by any municipality of this state prior to March 17, 1961, to authorize the issuance of bonds for airport purposes of whatsoever nature, including, but not limited to, the cost of planning, acquiring, establishing, developing, constructing, enlarging, improving, maintaining or equipping an airport or air navigation facility, or the site therefor, including the buildings, structures and other facilities incidental to the operation thereof or relating thereto, the acquisition of avigation easements and the acquisition or elimination of airport hazards, are ratified, validated and confirmed, and such bonds are declared to be valid and legally binding obligations payable in accordance with their terms, notwithstanding any lack of power of the governing body of the municipality to authorize and issue the bonds and provide for the payment thereof in the manner stated in the bonds and in the proceedings authorizing their issuance, and notwithstanding any defects or irregularities in any such proceedings or the failure of any such proceedings to comply with any of the provisions of this chapter known as the "Municipal Airport Act," or with any of the provisions of any other section or chapter of this code or any other general or special law or charter. The power to issue bonds for airport purposes of whatsoever nature, conferred by this chapter, is declared to have been and to be, and shall be, in addition and supplemental to the powers conferred by any other section or chapter of this code or any other general or special law or charter, and none of the provisions of this chapter shall be deemed to have affected, or shall affect, the powers conferred by any other section or chapter of this code or any other general or special law or charter to issue bonds for airport purposes of whatsoever nature, and this chapter shall not be construed to have been, or to be, in substitution for the powers conferred by any other section or chapter of this code or any other general or special law or charter.
T.C.A. § 42-5-117