As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN COCKPIT. DURING DESCENT THE FO NOTICED A BURNING SMELL FOLLOWED BY SMOKE COMING OUT OF THE AREA LOCATED BY THE RIGHT KNEE. ALL SYSTEMS AND INDICATIONS WERE NORMAL. MAINTENANCE FOUND A CHAFFED WIRING TO THE LAV CIRCUIT BREAKER BEHIND THE FO'S SIDE KICK PANEL. SYSTEM HAS PREVIOUSLY REMOVED FROM AIRCRAFT.