65.35—Knowledge requirements.
               		
               		
               	 	
               	 	
               	 	
               	 		
    
         Each applicant for an air traffic control tower operator certificate must pass a written test on—
    
    
    
        
        (b) 
         Airport traffic control procedures, and this subpart:
     
    
        
        (c) 
         En route traffic control procedures;
     
    
        
        (d) 
         Communications operating procedures;
     
    
        
        (e) 
         Flight assistance service;
     
    
        
        (f) 
         Air navigation, and aids to air navigation; and