As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1363 - LAV SMOKE INDICATION DURING CLIMB AND CLEARED ON ITS OWN. AFTER LANDING MX FOUND DE-ICING FLUID RUNNING DOWN APU INLET. RAN APU BLEEDS AND ENGINE BLEEDS NO FURTHER MESSAGE NOTED. OPERATIONALLY CHECKED LAV SMOKE DETECTOR SATISFACTORY. AIRCRAFT WAS RELEASED TO RETURN FOR SERVICE.