As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PS-2 CHECK FOUND THE LEFT FORWARD WING FAIRING, FIRST CABIN CEILING, COCKPIT AND MAIN PASSENGER DOOR EMERGENCY LIGHTS FAILED TO ILLUMINATE. THE AIRCRAFT WAS REMOVED FROM SERVICE. TROUBLESHOT PER WM 33-50-50 AND REMOVED AND REPLACED THE NR 1 EMERGENCY BATTERY & CHARGER ASSEMBLY IAW EMB AMM 33-50-04. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.