Ala. Code § 41-10-472
In the proceedings authorizing the issuance of any of its bonds, the authority is authorized and empowered to pledge for the payment of the principal of and interest on such bonds at the respective maturities of said principal and interest, and to agree to use solely for such purpose, all the revenues which under the provisions of Section 41-10-471 are provided for the payment of the said principal and interest, subject to prior pledges thereof as and to the extent the authority may provide. In said proceedings the authority may further provide and create, as security for the payment of said principal and interest, a statutory lien upon the buildings and properties, other than the State Capitol, for the acquisition and construction or renovation of which the bonds are issued. Such statutory lien shall not be subject to foreclosure and, in the event of default in the payment of any such principal or interest, the remedies thereunder shall be limited to a remedy by way of mandamus and to the appointment, as a matter of right, by any court having equity powers and having jurisdiction over the authority, of a receiver in equity with all the powers of such a receiver, except the power to sell the said buildings and properties. Upon the issuance of any bonds pursuant to this article the authority may file in the office of the Judge of Probate of Montgomery County, Alabama, an instrument reciting the issuance of such bonds and the pledge of said revenues and the creation of said statutory lien, if any, as security therefor, and the filing of such instrument shall constitute constructive notice of said pledge and lien, if any. Such instrument shall be received and recorded by said judge of probate upon the payment of the fee for the recording of mortgages but no tax shall be payable with respect thereto.
Ala. Code § 41-10-472 (1975)