As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN THE CABIN & COCKPIT AT 24000. FLIGHT ATTENDANT NOTED A HAZY SMOKE FROM THE REAR CABIN. SMOKE FROM EL RELAY BOX BEHIND FIRST OFFICERS SEAT. SMOKE DISSIPATING ON DESCEND TRANSFERRED TO NRWC 613-RSW-02186. REF NRWC 613-RSW-02186 FOR DETAILS. FOUND LT ACM SEIZED, REPLACED LT ACM IAW AMM CH 21-51-03. OPERATIONS CHECKED OK IAW AMM CH 21-51-00.