What was found
SMOKE AFT CABIN LAVATORY WARNING MSG, NO VISIBLE SMOKE. INSPECTED AFT LAVATORY & SURROUNDING AREAS. INSPECTED LIGHT BALLASTS, PERFORMED OPERATIONS CHECKS OF ALL LAVATORY LIGHTS, LAVATORY FLUSH & LAVATORY SMOKE DETECTOR WITH NO DEFECTS OR SMOKE NOTED. NO MSG NOTED IN COCKPIT IAW AMM'S 26-16-00, 38-31-13, 33-25-05, 33-25-03 & 33-25-01.