As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND THE LEFT AND RIGHT AFT OVERWING EMERGENCY LIGHTS INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 4 BATTERY ASSEMBLY AND BATTERY CHARGER. THE OPERATIONAL CHECK WAS GOOD IAW WC 33-700-19. THE AIRCRAFT WAS RETURNED TO SERVICE.