As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAV SMOKE TOILET MESSAGE APPEARED ON FINAL APPROACH. F/A REPORTED SMOKE AND STRONG ELECTRICAL ODOR COMING FROM CENTER OVERHEAD. APU AND PACKS ON. SMOKE DISSIPATED 3-5 MINUTES AFTER INDICATION. REMOVED CEILING PANELS. INSPECTED LIGHT FIXTURES AND WIRING. FOUND NO EVIDENCE OF BURNING OR ARCING IAW AMM 20-10-00. RAN AC PACKS FOR (2) HOURS. NO ODOR/ SMOKE NOTED. (K)