As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING B INSPECTION FOUND THE LEFT AND RIGHT OVER WING EMERGENCY LIGHTS INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE BULBS -NO FIX. TROUBLESHOT THE NR 4 BATTERY POWER SUPPLY. REMOVED AND REPLACED THE NR 4 BATTERY AND POWER SUPPLY IAW W/C 33-700-19. THE AIRCRAFT WAS RETURNED TO SERVICE.