Section 66A. A person aggrieved by the action of a single examiner in refusing, suspending or revoking a license to act as an operator of hoisting machinery may, within 1 week, appeal therefrom to the commissioner of the division of professional licensure, who shall appoint 3 inspectors of the office of public safety and inspections of the division of professional licensure, or himself and 2 inspectors, to act together as a board of appeal. The decision of a majority of the members of the board of appeal shall be final.