What was found
DURING FLIGHT, A STRONG ELECTRICAL FUME EMITTED IN THE COCKPIT. FUME SMELL DID NOT DISSIPATE AFTER COMPLYING WITH THE EMERGENCY PROCEDURES AND THE COM. CREW DIVERTED TO NRT, DECLARED AN EMERGENCY, AND DUMPED 100,000 LBS OF FUEL. DURING LANDING WHILE IN REVERSE THRUST, THE NBR 3 ENGINE COMPRESSOR STALLED AND OVERTEMPED. AIRCRAFT TAXIED TO THE GATE WITHOUT FURTHER INCIDENT. REPLACED THE MAIN BATTERY, BATTERY CHARGER, AND THE NBR 3 ENGINE. OPERATIONAL CHECK GOOD.