21.431—Applicability.
               		
               		
               	 	
               	 	
               	 	
               	 		
    
        
        (a) 
         This subpart prescribes Designated Alteration Station (DAS) authorization procedures for—
     
    
        
        (1) 
         Issuing supplemental type certificates;
     
    
        
        (2) 
         Issuing experimental certificates; and
     
    
        
        (3) 
         Amending standard airworthiness certificates.
     
    
        
        (b) 
         This subpart applies to domestic repair stations, air carriers, commercial operators of large aircraft, and manufacturers of products.
     
    
        
            Code of Federal Regulations
        
        [Amdt. 21-6, 30 FR 11379, Sept. 8, 1965; 30 FR 11849, Sept. 16, 1965, as amended by Amdt. 21-74, 62 FR 13253, Mar. 19, 1997]