Tennessee Valley Authority payment to tennessee valley authority fund For the purpose of carrying out the provisions of the Tennessee Valley Authority Act of 1933, as amended (16 U.S.C, ch. 12A), including purchase of one aircraft for replacement only, hire, maintenance, and operation of aircraft, and purchase (not to exceed two hundred and eighteen for replacement only) and hire of passenger motor vehicles, $50,600,000, to remain available until expended.