50 ILCS 615/5

As used in this Act: "Facility property" means property owned by a municipality with a population of over 500,000 inhabitants, or a unit of local government whose jurisdiction includes territory located in whole or in part within a municipality with a population of over 500,000 inhabitants, that is used by the municipality or other unit of local government for the purpose of an airport, parking, or waste disposal or processing. "Airport", however, does not include any airport property, as defined under Section 10 of the O'Hare Modernization Act. "Leased facility property" means facility property that is leased to a private entity for continued use for the same airport, parking, or waste disposal or processing purpose.