As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MOMENTARY LAV SMOKE DURING FLIGHT LESS THAN 5 SECONDS NO INDICAT ION OF SMOKE FLIGHT ATTENDANTS STRONGLY SUSPECT PASSENGER OF VAPING IN LAVATORY.FIGHT ATTENDANTS INSPECTED ALL LAVATORIES, NO SIGN OR SMELL OF SMOKE. PERFORMED TEST OF SDF 1 AND SDF 2, NO FAULTS CURRENT OR PREVIOUS.POST FLIGHT SHOWS NO FAULTS.LAST LEG SHOWS NO FAULTS.GROUND TEST SHOS NO FAULTS.