Ind. Code § 8-21-9-22
Airport revenue bonds issued under the provisions of this chapter shall not be deemed to constitute a debt of the state or of any political subdivision of the state or a pledge of the faith and credit of the state or of any such political subdivision, but such bonds shall be payable solely from the funds pledged for their payment as authorized under this chapter, unless such bonds are refunded by refunding bonds, issued under this chapter, which refunding bonds shall be payable solely from funds pledged for their payment as authorized under this chapter. All such revenue bonds shall contain on the face of the bonds a statement to the effect that the bonds, as to both principal and interest, are not an obligation of the State of Indiana, or of any political subdivision of the state, but are payable solely from revenues pledged for their payment. All expenses incurred in carrying out this chapter shall be payable solely from funds provided under the authority of this chapter, and nothing in this chapter contained shall be construed to authorize the department to incur indebtedness or liability on behalf of or payable by the state or any political subdivision of the state.
IC 8-21-9-22