What was found
SHIP 9522 -MISC/DE- DURING APPROACH FOR LANDING, THE "BUS DC R OFF" INDICATION ILLUMINATED. WHICH WAS FOLLOWED BY 15 OTHER DISCREPANCY INDICATIONS. THE QRH WAS COMPLIED WITH AND THE CREW DECLARED EMERGENCY DUE TO THE IMPENDING NO FLAP AND NO SLAT LANDING. A HOT BRAKE CONDITION EXISTED AFTER THE LANDING. CORRECTIVE ACTION: MAINTENANCE FOUND THAT THE RIGHT PCDU CIRCUIT BREAKER HAD TRIPPED. THE PDCU WAS REPLACED AND THE CONTACTORS WERE CLEANED, THE DC BUS FEED C/B WAS REPLACED, AND THE MESSAGES WERE ALL CLEARED. A HIGH-ENERGY STOP INSPECTION RESULTED IN NO FINDINGS AND THE AIRCRAFT WAS RETURNED TO SERVICE. (LP #4716304)