Narrative:

About 1 hour 20 minutes into the flight the C flight attendant reported a burning smell coming from the water heater in the aft right side lavatory; no smoke or fire associated with the odor. I directed the pilot jump seater to check it out. He confirmed it was the water heater and turned it off. The odor then stopped. After following the QRH we contacted maintenance control via dispatch and verified the water heater was turned off correctly. With 15 minutes remaining until top of descent I continued to destination. At no time during this event was there any smoke or fumes in the flight deck or cabin and no ECAM or lav smoke detector warnings. After landing we MEL'ed the water heater and flew the next leg.

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Original NASA ASRS Text

Title: A320 Captain is informed by the C Flight Attendant that a burning smell is coming from the water heater in an aft lavatory. A jump seating pilot confirmed it was the water heater and turned it off. After conferring with Maintenance the flight continues to destination.

Narrative: About 1 hour 20 minutes into the flight the C Flight Attendant reported a burning smell coming from the water heater in the aft right side lavatory; NO SMOKE OR FIRE associated with the odor. I directed the pilot jump seater to check it out. He confirmed it was the water heater and turned it off. The odor then stopped. After following the QRH we contacted Maintenance Control via Dispatch and verified the water heater was turned off correctly. With 15 minutes remaining until top of descent I continued to destination. At NO TIME DURING THIS EVENT WAS THERE ANY SMOKE OR FUMES IN THE FLIGHT DECK OR CABIN AND NO ECAM OR LAV SMOKE DETECTOR WARNINGS. After landing we MEL'ed the water heater and flew the next leg.

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.