Ala. Code § 14-2-10
In anticipation of issuance of bonds under this chapter, the authority may, from time to time, borrow such sums as may be needed, not exceeding $1,000,000.00 in aggregate principal amount, for any of the purposes for which bonds are authorized to be issued under this chapter and in evidence of the moneys so borrowed may issue its promissory notes. The authorized principal amount of notes that may be issued under this section shall be reduced to the extent that bonds may be issued under this chapter. The principal of and the interest on notes so issued may, from time to time, be refunded by refunding notes or by bonds in anticipation of the issuance of which such notes were issued. All such notes, whether initial issues or refunding issues, may bear interest from their dates until their maturities at such rate or rates as may be deemed acceptable by the board of directors, not to exceed 10 percent per annum, shall mature within two years from their date, and the principal thereof, premium, if any, and interest thereon shall be payable solely from the proceeds of the refunding notes issued to refund any such notes outstanding, the proceeds from the sale of bonds in anticipation of the issuance of which any such notes were issued and funds from which such bonds may be made payable, all as may be provided in the resolution of the board of directors under which such notes may be issued.
Ala. Code § 14-2-10 (1975)