What was found
DURING B INSPECTION FOUND THE EXTERNAL OVERWING EMERGENCY LIGHT INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE LEFT EXTERNAL AFT EMERGENCY LIGHT LAMP IAW EMB 140 AMM 33-50-10-000-801-A AND 33-50-10-400-801-A. PART NUMBER 1317. DID NOT FIX. REMOVED AND REPLACED THE NR 4 BATTERY ASSEMBLY AND CHARGER IAW WC 33-700-19. THE OPERATIONAL CHECK WAS NORMAL IAW WC 33-700-17. NO FURTHER DEFECTS NOTED AT THIS TIME. THE AIRCRAFT WAS RETURNED TO SERVICE.