As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON DESCENT, FLIGHT ATTENDANT NOTICED A SPARK UNDER SEAT 3B. FLIGHT ATTENDANT NOTIFIED THE FLIGHT ENGINEER AND TECHNICAL REP, ONE FIRE BOTTLE WAS USED TO EXTINGUISH THE SPARK. CANNON PLUG WAS DISCONNECTED TO SEAT ELECTRONICS BOX. REPAIR TO WIRE ACCOMPLISHED. NO FURTHER PROBLEMS FOR REMAINDER OF FLIGHT. UPON LANDING, SEAT ELECTRONICS BOX CABLE WAS REPAIRED. OPS CHECK OK. MM 23-32-00. (X)