70 ILCS 5/21
All contracts, leases, agreements, or other obligations entered into by any airport authority that is authorized under this amendatory Act of 1992 to acquire, own, operate, and finance any commercial or recreational facilities in connection with or relating to any commercial or recreational facility that were entered into or authorized to be entered into by proceedings adopted by the Board of Commissioners of the authority before the effective date of this amendatory Act of 1992 are valid and legally binding obligations of the authority. All instruments providing for the payment of money executed, issued, and delivered by any airport authority that is authorized under this amendatory Act of 1992 to acquire, own, operate, and finance any commercial or recreational facilities, or that any airport authority that is authorized under this amendatory Act of 1992 to acquire, own, operate, and finance any commercial or recreational facilities has assumed or agreed to pay, that were issued and delivered, or assumed, or authorized to be issued and delivered or assumed, by proceedings adopted by the Board of Commissioners of the authority before the effective date of this amendatory Act of 1992, that were authorized for the purpose of financing all or any portion of the cost of any commercial or recreational facility, are valid and legally binding obligations of the airport authority issuing or assuming the obligation to pay the instruments. The acquisition, construction, improvement, equipping, expansion, ownership, or operation by any airport authority that is authorized under this amendatory Act of 1992 to acquire, own, operate, and finance any commercial or recreational facilities before the effective date of this amendatory Act of 1992 is approved, ratified, confirmed, authorized, and validated.
70 ILCS 5/21