620 ILCS 45/4
One of the directors of each governmental unit shall hold office for one year, 2 for two years, and 2 for three years from the first day of July following their respective appointments, and until his successor is appointed, and at their first regular meeting they shall cast lots for the respective terms; and annually thereafter, the chairman or president of the county board, and the governing body of any taxing district jointly interested in the maintenance and operation of such airport and landing field, as provided in this Act, shall before the first day of July of each year, appoint in the manner hereinbefore provided, one director to take the place of each retiring director, who shall hold office for three years and until his successor is appointed. The chairman or president of the county board may, with the consent of three-fourths of the members of the county board, remove any director for misconduct or neglect of duty, and any governing body of any taxing district jointly operating said airport as herein provided may, by three-fourths vote, remove any director so appointed by the respective taxing district for like reasons.
Any board organized under the provisions of Section 3 of this Act, already in existence at the time of the effective date of this amendatory Act of 1980, shall be expanded immediately by the appointment of the additional directors as herein provided. One director shall be appointed to serve until July 1, 1981; the other shall be appointed to serve until July 1, 1982. At the end of the respective terms a successor shall be appointed for each director to serve the full term as hereinbefore provided.
620 ILCS 45/4