As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION, THE EMERGENCY LIGHTS OVERWING WERE FOUND TO BE INOPERATIVE. MAINTENANCE R & R THE NR 4 EMERGENCY LIGHT BATTERY PACK AND NR 4 BATTERY POWER SUPPLY, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE.