338.601—Prohibition of maximum-age requirements.
         A maximum-age requirement may not be applied in either competitive or noncompetitive examinations for positions in the competitive service except as provided by:
    
    
    
        
        (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.