Ala. Code § 41-10-358
The bonds, which may be issued in one or more series, shall be in such forms and denominations and of such tenor and maturities, shall, if issued as interest-bearing bonds, bear such rate or rates of interest payable and evidenced in such manner, shall be payable in such installments, at such time or times and at such place or places, and may contain other provisions not inconsistent with this article, all as may be provided in the resolution or resolutions of the directors wherein the bonds are authorized to be issued; provided, that none of the bonds shall have a specified maturity date later than 30 years after its date. The authority may at its election retain in the resolution or resolutions under which any of the bonds are issued an option to redeem all or any thereof and at such redemption price or prices and after such notice or notices and on such dates and on such terms and conditions as may be set forth in said resolution or resolutions and as may be briefly recited in the bonds with respect to which such option of redemption is retained.
Ala. Code § 41-10-358 (1975)