(30 ILCS 105/6z-20.1)
    Sec. 6z-20.1. The State Aviation Program Fund and the Sound-Reducing Windows and Doors Replacement Fund.
    (a) The State Aviation Program Fund is created in the State Treasury. Moneys in the Fund shall be used by the Department of Transportation for the purposes of administering a State Aviation Program. Subject to appropriation, the moneys shall be used for the purpose of distributing grants to units of local government to be used for airport-related purposes. Grants to units of local government from the Fund shall be distributed proportionately based on equal part enplanements, total cargo, and airport operations. With regard to enplanements that occur within a municipality with a population of over 500,000, grants shall be distributed only to the municipality.
    (b) For grants to a unit of government other than a municipality with a population of more than 500,000, "airport-related purposes" means the capital or operating costs of: (1) an airport; (2) a local airport system; or (3) any other local facility that is owned or operated by the person or entity that owns or operates the airport that is directly and substantially related to the air transportation of passengers or property as provided in 49 U.S.C. 47133, including (i) the replacement of sound-reducing windows and doors installed under the Residential Sound Insulation Program and (ii) in-home air quality monitoring testing in residences in which windows or doors were installed under the Residential Sound Insulation Program.
    (c) For grants to a municipality with a population of more than 500,000, "airport-related purposes" means the capital costs of: (1) an airport; (2) a local airport system; or (3) any other local facility that (i) is owned or operated by a person or entity that owns or operates an airport and (ii) is directly and substantially related to the air transportation of passengers or property, as provided in 49 U.S.C. 47133. For grants to a municipality with a population of more than 500,000, "airport-related purposes" also means costs, including administrative costs, associated with the replacement of sound-reducing windows and doors installed under the Residential Sound Insulation Program.
    (d) In each State fiscal year, the first $7,500,000 attributable to a municipality with a population of more than 500,000, as provided in subsection (a) of this Section, shall be transferred to the Sound-Reducing Windows and Doors Replacement Fund, a special fund created in the State Treasury. Subject to appropriation, the moneys in the Fund shall be used for costs, including administrative costs, associated with the replacement of sound-reducing windows and doors installed under the Residential Sound Insulation Program. Any amounts attributable to a municipality with a population of more than 500,000 in excess of $7,500,000 in each State fiscal year shall be distributed among the airports in that municipality based on the same formula as prescribed in subsection (a) to be used for airport-related purposes.
(Source: P.A. 101-10, eff. 6-5-19; 101-636, eff. 6-10-20.)