S.C. Code Ann. § 55-5-250
If no appeal is taken from the order of the Division of Aeronautics within the period fixed, the party against whom the order is entered is deemed to have waived the right to have the reasonableness or lawfulness of the order reviewed by the Administrative Law Court, and there may be no trial of that issue in a court in which suit may be instituted for the penalty for failure to comply with the order.