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 LEFT AND RIGHT EXTERNAL OVERWING EMERGENCY LIGHTS FAILED TO ILLUMINATE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 4 EMERGENCY BATTERY AND CHARGER ASSEMBLY POWER SUPPLY IAW EMB AMM 33-50-04. THE OPERATIONAL CHECK WAS GOOD. NO DEFECTS NOTED AT THIS TIME. THE AIRCRAFT WAS RETURNED TO SERVICE.