As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE VISIT ALL EMERGENCY LIGHTS ON BATTERY PACK NR 1 WERE FOUND TO BE INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 1 EMERGENCY POWER SUPPLY AND CHARGER. THE OPERATIONAL CHECK WAS GOOD IAW WC 33-700-19. THE AIRCRAFT WAS RETURNED TO SERVICE.