S.C. Code Ann. § 55-11-520
(B) A request that bonds be issued pursuant to this article must be accompanied by a binding contract with either an air carrier or the principal user of the air carrier hub terminal facilities to be financed with the issuance of the obligations described in this article, committing the entity to use the air carrier hub terminal facility for a period of five years or the period of time needed to retire any indebtedness incurred to construct the air carrier hub terminal facility, whichever is less. Upon receipt of a certified copy of the executed contract, the secretary shall consider the entity's financial ability, willingness, and commitment to serve this State and other factors considered relevant by the secretary. If the secretary determines that it is in the best interest of this State for the State to provide or to assist in the providing of suitable air carrier hub terminal facilities, the secretary shall recommend that the board consider approving the issuance of bonds of this State for the purposes authorized in this article and shall forward his written approval and request to the Joint Bond Review Committee and the board. The approval and request must be accompanied by a certificate of the secretary establishing: