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]