(620 ILCS 5/22)
(from Ch. 15 1/2, par. 22.22)
"Airport hazard" means any structure, object of natural growth, or
use of land, which obstructs the air space required for the flight of
aircraft in landing or taking off at any airport or restricted landing area
or is otherwise hazardous to such landing or taking off.
(Source: Laws 1945, p. 335.)