Tennessee Code Title 42. Aeronautics § 42-3-106

(a) MUNICIPAL AUTHORITIES. In any suit, action, or proceeding involving the validity or enforcement of, or relating to, any contract of a municipal airport authority, created pursuant to § 42-3-103, the municipal authority shall be conclusively deemed to have become established and authorized to transact its business and exercise its powers under this chapter upon proof of the adoption by the municipality of the resolution creating the municipal airport authority, the appointment and qualification of the first commissioners of the authority, and of the issuance and recording of a certificate of incorporation. Duly certified copies of the resolution creating the authority, the certificates of appointment of the commissioners, and the certificate of incorporation shall be admissible in evidence in any suit, action, or proceeding.

(b) REGIONAL AUTHORITIES. In any suit, action, or proceeding involving the validity or enforcement of, or relating to, any contract of a regional airport authority, the regional airport authority shall be conclusively deemed to have become established and authorized to transact its business and exercise its powers under this chapter upon proof of the issuance by the secretary of state of a certificate of incorporation of the regional airport authority. A copy of the certificate of incorporation, duly certified by the secretary of state, or by the county register in whose office the certificate of incorporation is recorded, shall be admissible in evidence in any suit, action, or proceeding.