(70 ILCS 5/9.2) (from Ch. 15 1/2, par. 68.9b)
Sec. 9.2.
Whenever any contiguous, uninhabited, unincorporated territory is owned by any airport authority, that territory may be annexed by that airport authority by the passage of a resolution to that effect, describing the territory to be annexed. A copy of the resolution, with an accurate map of the annexed territory shall be recorded with the recorder of the county wherein the annexed territory is located.
(Source: P.A. 83-358.)