As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 3549 DURING THE PREFLIGHT INSPECTION THE CREW OBSERVED THE EMERGENCY LIGHT SWITCH IN ARMED POSITION AND ALL EMERGENCY LIGHTS WERE INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. PERFORMED OPERATIONAL TEST OF EMERGENCY LIGHTS IAW EMB-145 MM 33-50-00. THE EMERGENCY LIGHTS TESTED SATISFACTORY. NO PARTS REMOVED OR REPLACED. THE AIRCRAFT WAS RETURNED TO SERVICE.