209.203—Notice of investigation.
        
        (a) 
         FRA begins a compliance order proceeding by serving a notice of investigation on the respondent.
    
    
    
    
    
    
        
        (c) 
         The FRA may amend the notice of investigation at any time prior to the entry of a final compliance order. If an amendment includes any new material allegation of fact or seeks new or additional remedial action, the respondent is given an opportunity to respond.