Tennessee Code Title 42. Aeronautics § 42-2-223

(a) The department shall act as agent for each municipality and airport authority for the purposes of applying for, receiving and disbursing federal funds made available pursuant to the former Airport and Airway Development Act of 1970, 84 Stat. 219, 49 U.S.C. 1970 ed. § 1701 et seq., or any amendment thereto, unless a municipality or an airport authority owns an airport having a minimum of twenty-five thousand (25,000) originating enplanements annually on regularly scheduled airline carriers as certified by the federal civil aeronautics board, in which event the municipality or airport authority may act as principal with respect to any airport owned by it, or it may designate the department as its agent for the purposes mentioned in this subsection (a).

(b) All funds received by the department shall be deposited in the state treasury to be kept and disbursed in a manner consistent with federal requirements.