Narrative:

I was in the aft galley when the mid cabin lavatory chimes went off continuously. I ran to first class to obtain the halon. I went in the lavatory and dumped the contents of the garbage can on the floor. I started looking in all compartments as I smelled toxic fumes. I felt the water heater and determined it was extremely hot. I turned off the switch to the smoke detector. We told the captain of the situation and locked off the lavatory. We landed safely.

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Original NASA ASRS Text

Title: B757 Cabin Attendant attended to a smoke detector alerting in the mid-lavatory. After an assessment; she determined it was attributed to an overheating water heater; advised the Captain and an uneventful landing ensued.

Narrative: I was in the aft galley when the mid cabin lavatory chimes went off continuously. I ran to First Class to obtain the halon. I went in the lavatory and dumped the contents of the garbage can on the floor. I started looking in all compartments as I smelled toxic fumes. I felt the water heater and determined it was extremely hot. I turned off the switch to the smoke detector. We told the Captain of the situation and locked off the lavatory. We landed safely.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.