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 RIGHT UPPER WING EMERGENCY LIGHT INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 4 EMERGENCY POWER SUPPLY UNIT IAW W/C 33-700-19. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.