554.7—Investigation priorities.
               		
               	 	
               	 	
               	 	               	 	               	 	               	 	               	 	
               	 	
    
        
        (a) 
         Compliance investigation priorities are reviewed annually and are set according to the following criteria:
     
    
        
        (1) 
         Prior compliance test data;
     
    
    
        
        (3) 
         Engineering analysis of vehicle and equipment designs;
     
    
        
        (4) 
         Consumer complaints; and
     
    
    
        
        (b) 
         Defects inputs are reviewed periodically by an appropriate panel of engineers in consultation with the Office of Chief Counsel to determine whether a formal investigation should be opened by the Office of Defects Investigation.