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 FORWARD CEILING OVERWING EXIT SIGN WILL NOT STAY ON. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 4 EMERGENCY LIGHT BATTERY AND POWER SUPPLY IAW W/C 33-700-19. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.