Sec. 854.402.  CERTIFICATION AND FINDING OF DISABILITY.  (a)  The medical board shall issue and send to the board of trustees a certification of disability for a member included in the coverage of the supplemental disability benefits fund if, after a medical examination of the member, the medical board finds that the member is mentally or physically incapacitated and is unable to engage in gainful occupation.
(b)  A member is entitled to a supplemental disability retirement annuity if the board of trustees, after receiving a certification of disability for the member under this section, finds that the member's incapacity:
(1)  is the direct result of injuries sustained after the effective date of coverage of the member in the supplemental disability benefits fund and before January 1, 1988, as a direct and proximate result of the performance of the duties of the member's employment;  and
(2)  is likely to be permanent.
Acts 1981, 67th Leg., p. 1876, ch. 453, Sec. 1, eff. Sept. 1, 1981.  Amended by Acts 1987, 70th Leg., ch. 183, Sec. 12, eff. Aug. 31, 1987.  Renumbered from Vernon's Ann.Civ.St. Title 110B, Sec. 64.402 by Acts 1989, 71st Leg., ch. 179, Sec. 1, eff. Sept. 1, 1989.