(70 ILCS 1825/2.8)
(from Ch. 19, par. 252.8)
"Approach" means any path, course or zone defined by an ordinance
of the District or by other lawful regulation, on the ground or in the air,
or both, for the use of aircraft in landing and taking off of an airport
located within the District.
(Source: Laws 1965, p. 3150