As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE VISIT FOUND THE RIGHT AFT EMERGENCY LIGHT IS INOPERABLE. THE AIRCAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE BATTERY POWER SUPPLY NR 4 IAW AE W/C 33-700-19. THE OPERATIONAL CHECK WAS GOOD IAW AE W/C 33-700-17. THE AIRCRAFT WAS RETURNED TO SERVICE.