As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL AT APPROX 4000 FT GOT A BURNING SMELL IN COCKPIT AND THE CABIN. BOTH AFT LAV SMOKE ALARMS SOUNDED. ORDER CLEARED AND SMOKE ALARMS STOPPED JUST AFTER LANDING. INSPECTION A/C FOR FLUID LEAKS. FOUND RESIDUAL DE-ICE FLUID. REPLACED BOTH A/C WATER SEPARATOR BAGS AND PERFORMED DUCT BURNOUT. ODOR DISSIPATED. RUNUP NORMAL.