Narrative:

I was the captain of a flight; B777 operating from london. Approximately 8 hours into the flight at XA30Z we were notified by the purser that numerous passenger were detecting the smell of electrical smoke in the business cabin. This odor was also detected by the flight attendants in the aft cabin. We did not notice any cockpit indication of a problem but as a precaution we reviewed the smoke and fume illumination checklist and removed power from the recirculation fans; gasper fans; all galley power and passenger entertainment system. The overhead fluorescent lighting was already off and we instructed the purser to keep these lights off. We consulted with dispatch and maintenance controller regarding the issue and jointly determined that since the odor was dissipating after the removal of the power from the system it was safe to continue the flight. We advised ATC of the issue and descended to a lower altitude as a precautionary measure as we continued on to destination for an uneventful arrival. After deplaning; we conducted a joint debrief on board the aircraft with the cabin crew and maintenance.

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Original NASA ASRS Text

Title: FLT DECK AND CABIN CREWS OF B777-222 TAKE PRECAUTIONS FOR ELECTRICAL ODORS PERCEIVED IN THE CABIN. FUMES DISSIPATE AND THE FLT CONTINUES TO DEST.

Narrative: I WAS THE CAPT OF A FLT; B777 OPERATING FROM LONDON. APPROX 8 HRS INTO THE FLT AT XA30Z WE WERE NOTIFIED BY THE PURSER THAT NUMEROUS PAX WERE DETECTING THE SMELL OF ELECTRICAL SMOKE IN THE BUSINESS CABIN. THIS ODOR WAS ALSO DETECTED BY THE FLT ATTENDANTS IN THE AFT CABIN. WE DID NOT NOTICE ANY COCKPIT INDICATION OF A PROB BUT AS A PRECAUTION WE REVIEWED THE SMOKE AND FUME ILLUMINATION CHKLIST AND REMOVED PWR FROM THE RECIRCULATION FANS; GASPER FANS; ALL GALLEY PWR AND PAX ENTERTAINMENT SYS. THE OVERHEAD FLUORESCENT LIGHTING WAS ALREADY OFF AND WE INSTRUCTED THE PURSER TO KEEP THESE LIGHTS OFF. WE CONSULTED WITH DISPATCH AND MAINT CTLR REGARDING THE ISSUE AND JOINTLY DETERMINED THAT SINCE THE ODOR WAS DISSIPATING AFTER THE REMOVAL OF THE PWR FROM THE SYS IT WAS SAFE TO CONTINUE THE FLT. WE ADVISED ATC OF THE ISSUE AND DSNDED TO A LOWER ALT AS A PRECAUTIONARY MEASURE AS WE CONTINUED ON TO DEST FOR AN UNEVENTFUL ARR. AFTER DEPLANING; WE CONDUCTED A JOINT DEBRIEF ON BOARD THE ACFT WITH THE CABIN CREW AND MAINT.

Data retrieved from NASA's ASRS site as of January 2009 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.