1046
PUBLIC LAW 88-643-OCT. 13, 1964 \^
70 Stat. 752.
[78 STAT.
such annuity or any right thereto shall terminate on the last day of the month before (1) his attaining age eighteen unless incapable of self-support, (2) his becoming capable of self-support after age eighteen, (3) his marriage, or (4) his death, except that the annuity of a child who is a student as described in section 204(b)(3) of this Act shall terminate on the last day of the month before (1) his marriage, (2) his death, (3) his ceasing to be such a student, or (4) his attaining age twenty-one. (f) Any unmarried participant retiring under the provisions of this Act and found by the Director to be in good health may at the time of retirement elect a reduced annuity, in lieu of the annuity as hereinbefore provided, and designate in writing a person having an insurable interest (as that term is used in section 9(h) of the Civil Service Retirement Act (5 U.S.C. 2259(h))) in the participant to receive an annuity after the participant's death. The annuity payable to the participant making such election shall be reduced by 10 per centum of an annuity computed as provided in paragraph (a) of this section, and by 5 per centum of an annuity so computed for each full five years the person designated is younger than the participant, but such total reduction shall not exceed 40 per centum. The annuity of a survivor designated under this paragraph shall be 55 per centum of the reduced annuity computed as prescribed above. The annuity payable to a beneficiary under the provisions of this paragraph shall begin on the first day of the next month after the participant dies. Upon the death of the surviving beneficiary all payments shall cease and no further annuity payments authorized under this paragraph shall be due or payable. PART D — B E N E F I T S ACCRUING TO CERTAIN PARTICIPANTS RETIREMENT FOR DISABILITY OR INCAPACITY—MEDICAL EXAMINATION RECOVERY
S E C 231. (a) Any participant who has five years of service credit toward retirement under the system, excluding military or naval service that is credited in accordance with provisions of section 251 or 252(a)(2), and who becomes totally disabled or incapacitated for useful and efficient service by reason of disease, illness, or iniury not due to vicious habits, intemperance, or willful misconduct on his part, shall, upon his own application or upon order of the Director, be retired on an annuity computed as prescribed in section 221. If the disabled or incapacitated participant is under sixty and has less than twenty years of service credit toward his retirement under the system at the time he is retired, his annuity shall be computed on the assumption that he has had twenty years of service, but the additional service credit that may accrue to a participant under this provision shall in no case exceed the difference between his a^e at the time of retirement and age sixty, but this provision shall not increase the annuity of any survivor. (b) In each case, the participant shall be ^iven a medical examination by one or more duly qualified physicians or surgeons designated by the Director to conduct examinations, and disability shall be determined by the Director on the basis of the advice of such physicians or surgeons. Unless the disability is permanent, like examinations shall be made annually until the annuitant has reached the statutory mandatory retirement a^e for his grade as provided in section 235. If the Director determines on the basis of the advice of one or more duly qualified physicians or surgeons conducting such examinations that an annuitant has recovered to the extent that he can return to duty, the annuitant may apply for reinstatement or
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