As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT MX - ONT TO ONT - WHILE PERFORMING 2A CHECK PRELIMINATORY INSPECTION, INSPECTOR FOUND COCKPIT CEILING EMERGENCY LIGHT DOES NOT ILLUMINATE. MX PERSONNEL REMOVED AND REPLACED LIGHT BULB OPERATIONALLY CHECKED SATISFACTORY. AIRCRAFT WAS RELEASED FOR RETURN TO SERVICE.