As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS NOTICED BURNING PLASTIC SMELL IN THE AREA OF THE FIRST CLASS CLOSET, BUT NOT IN CLOSET. NO SMOKE. (FLT 4454) INSPECTED BEHIND PSU AISLE CEILING PANEL NO SIGN OF SMOKE NOTED. ALL ELECTRICAL SYSTEM LIGHTING WORKING PROPERLY, NO SIGN OF OVER HEATING.