As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE CHECK FOUND THE REAR EMERGENCY LIGHTS WOULD NOT TURN ON. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED NR 4 BATTERY AND CHARGER ASSEMBLY IAW EMB140 AMM 33-50-04. THE AIRCRAFT WAS RETURNED TO SERVICE.