Ala. Code § 22-3A-9
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(s) of interest and be payable and evidenced in such manner, shall be payable in such installments at such time(s) and at such place(s), and may contain such other provisions not inconsistent with this chapter, all as may be provided in the resolution(s) of the directors under which the bonds are authorized to be issued; provided that none of the bonds shall have a specified maturity date later than 20 years after its date. At its election, the authority may retain in the resolution(s) under which any of the bonds are issued an option to redeem all or any thereof and at such redemption price(s) and after such notice(s) and on such dates and subject to such terms and conditions as may be set forth in said resolution(s) and as may be briefly recited in the bonds with respect to which such option of redemption is retained.
Ala. Code § 22-3A-9 (1975)