Ala. Code § 45-37A-51.06
The words, terms, and phrases used in this section shall have the meaning ascribed to them by Act 929, unless it appears from the context that a different meaning is intended. Any police officer or firefighter who is granted an ordinary disability allowance under Act 929 shall receive under this subpart a supplemental ordinary disability allowance in the amount hereinafter specified so long as he or she receives the ordinary disability allowance under this subpart. The supplemental disability allowance payable to the firefighter or police officer under this subpart shall be in such amount that the sum of the ordinary disability allowance he or she receives under Act 929 and the supplemental disability allowance he or she receives under this subpart shall be equal to two percent of his or her final average salary for each year of creditable service; provided, however, that in any event the amount of the supplemental ordinary disability allowance such firefighter or police officer receives under this subpart shall be such that the sum of the ordinary disability allowance he or she receives under Act 929 and the supplemental ordinary disability allowance he or she receives under this subpart shall not be less than 25 percent of his or her final average salary or more than 50 percent of his or her final average salary.
Ala. Code § 45-37A-51.06 (1975)