620 ILCS 50/44
When ten percent of the voters of any county file a petition with the county clerk of such county, asking that a County Airport Commission be created in the manner hereinafter provided, such petition shall be presented to the county board of such county at its next meeting.
At the next meeting of said Board following the presentation of said petition, but not sooner than twenty days after such presentation, the county board shall proceed to elect a County Airport Commission, composed of five voters of such county, two of whom shall be members of such county board, hereinafter called County Board members, and three of whom shall be persons who hold no elective or appointive political office, hereinafter called Non-County Board Members. At least one of such Non-County Board members shall be licensed air pilot or a former member of one of the branches of the Armed Services of the United States who has had equivalent training and experience. All members shall be chosen with reference to their special fitness for such office. The member chosen for aviation experience shall be known as an "Aviation" member, and the other Non-County Board members shall be known as "Non-Aviation" members nothing herein shall prevent the appointment of more than one member of the commission meeting the qualifications of an "aviation" member.
620 ILCS 50/44