What was found
ON FLIGHT 3298 THE CREW REPORTED AFTER TAKEOFF RECEIVED A LAVATORY SMOKE EICAS MESSAGE. THE MESSAGE WAS ILLUMINATED FOR SEVERAL MINUTES THEN WENT OUT. A PASSENGER CLAIMS THEY SMELLED ELECTRICAL WIRING SMOKE. THE CAPTAIN ELECTED TO RETURN TO DFW. THE AIRCRAFT WAS REMOVED FROM SERVICE. INSPECTED AIRCRAFT AND LAVATORY FOR SMOKE. NO DEFECTS NOTED AT THIS TIME. PERFORMED ETN EM-72-034R4 FOR ENGINE ODOR EVENT TROUBLESHOOTING SUPPLEMENT. NO DEFECTS NOTED AT THIS TIME. THE AIRCRAFT WAS RETURNED TO SERVICE.