FAA proposes a $417,500 civil penalty against FedEx of Memphis, TN, for allegedly operating an aircraft that was not in compliance with Federal Aviation Regulations. FAA alleges that FedEx failed to rebalance a horizontal stabilizer tab control surface on the Boeing 727 after repainting the part. FAA alleges that FedEx's failure to perform rebalancing rendered the aircraft unairworthy and that the company operated the aircraft on at least 133 flights when it was in that condition.