As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT MX - ONT - WHILE PERFORMING PRELIMINARY INSPECTION ON AIRCRAFT, QC PERSONNEL FOUND A FLOOR PROXIMITY LIGHTING SEGMENT MISSING AT 18BC. MX PERSONNEL INSTALLED A NEW PROXIMITY LIGHTING SEGMENT OPERATIONALLY CHECKED SATISFACTORY AIRCRAFT WAS RELEASED TO RETURN FOR SERVICE.