(70 ILCS 1820/2.8)
(from Ch. 19, par. 852.8)
"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 from an airport located within the District.
(Source: P.A. 79-1475.)