What was found
AIRCRAFT WAS NOT GROUNDED: DURING FLIGHT HAD SMOKE LAVATORY SMOKE WARNING WHICH THE FLIGHT CREW BELIEVED A PASSENGER WAS SMOKING IN THE MID LAVATORY - THE FLIGHT ATTENDANTS INVESTIGATED ALL LAVATORIES AND NOTICED CIGARETTE SMOKE SMELL IN THE MID LAVATORY - THE FLIGHT ATTENDANTS SEARCHED ALL AREAS WITH NOTHING FOUND - MAINTENANCE PERFORMED BITE TEST OF MID LAVATORY SMOKE DETECTOR PER AMM 26-17-00-710-001A WITH THE TEST RESULTS SATISFACTORY AND NO FAULTS DETECTED - MAINTENANCE INSPECTED MID LAVATORY AND SURROUNDING AREAS WITH NO EVIDENCE OF CIGARETTE SMOKING OR FIRE DAMAGE FOUND