A maximum-age requirement may not be applied in either competitive or noncompetitive examinations for positions in the competitive service except as provided by:
(a)
Section 3307 of title 5, United States Code; or
(b)
Public Law 93-259 which authorizes OPM to establish a maximum-age requirement after determining that age is an occupational qualification necessary to the performance of the duties of the position.
Code of Federal Regulations
[40 FR 42734, Sept. 16, 1975]