As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE STARTED COMING FROM OVERHEAD ABOVE ROW 44L JUST PRIOR TO LANDING. HALON WAS APPLIED AND THE SMOKE CEASED. MAINTENANCE FOUND SIDEWALL BALLAST AT ROW 44L BURNT. THE BALLAST WAS REMOVED AND THE SIDEWALL LIGHT WAS PLACARD INOPERATIVE.