Every park district is authorized to acquire by purchase or condemnation under power of eminent domain, or lease, real estate, in whole or in part, either within or without the corporate limits of said park district for the purpose of establishing or expanding for said district an airport and landing field for aircraft, and to provide hangars, shops, and other necessary equipment and appurtenances therefor usually incident to the operation of an airport, and to maintain and operate the same.
70 ILCS 1205/9-2