What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23)10 Minutes out after takeoff the aft cabin flight attendent observed an aft lavatory oral and smoke warning light on. The flight attendent reported the warning to the lead flight attendent who reported a fire to the flight crew. An inflight fire was reported to ATC and the a/c returned to Minneapolis uneventful. The flight attendent opened the aft lavatory door and observed a rippling smoke coming from the waste receptacle and poured a pot of coffee in the waste receptacle to extinguish any possible source, she also stated the smoke had an electrical smell. Inspection of the contents did not reveal any evidence of a possible fire or smoldering paper. The contents of the container consisted of only three paper towels. Chicago NTSB was contacted to discuss information and the a/c was released. Maintenance inspected the surrounding area of waste receptacle for possible discrepancies and retested the smoke alarm warning system, along with inspecting the fire extinguishing system. The source of the smoke could not be determined and the a/c was released.
As the FAA filed it
(-23)10 MINUTES OUT AFTER TAKEOFF THE AFT CABIN FLIGHT ATTENDENT OBSERVED AN AFT LAVATORY ORAL AND SMOKE WARNING LIGHT ON. THE FLIGHT ATTENDENT REPORTED THE WARNING TO THE LEAD FLIGHT ATTENDENT WHO REPORTED A FIRE TO THE FLIGHT CREW. AN INFLIGHT FIRE WAS REPORTED TO ATC AND THE A/C RETURNED TO MINNEAPOLIS UNEVENTFUL. THE FLIGHT ATTENDENT OPENED THE AFT LAVATORY DOOR AND OBSERVED A RIPPLING SMOKE COMING FROM THE WASTE RECEPTACLE AND POURED A POT OF COFFEE IN THE WASTE RECEPTACLE TO EXTINGUISH ANY POSSIBLE SOURCE, SHE ALSO STATED THE SMOKE HAD AN ELECTRICAL SMELL. INSPECTION OF THE CONTENTS DID NOT REVEAL ANY EVIDENCE OF A POSSIBLE FIRE OR SMOLDERING PAPER. THE CONTENTS OF THE CONTAINER CONSISTED OF ONLY THREE PAPER TOWELS. CHICAGO NTSB WAS CONTACTED TO DISCUSS INFORMATION AND THE A/C WAS RELEASED. MAINTENANCE INSPECTED THE SURROUNDING AREA OF WASTE RECEPTACLE FOR POSSIBLE DISCREPANCIES AND RETESTED THE SMOKE ALARM WARNING SYSTEM, ALONG WITH INSPECTING THE FIRE EXTINGUISHING SYSTEM. THE SOURCE OF THE SMOKE COULD NOT BE DETERMINED AND THE A/C WAS RELEASED.