B767 CABIN CREW DETECTS STRONG ODORS IN CABIN DURING TRANSATLANTIC FLT.

Narrative

APPROX 4 HOURS INTO THE FLT I STARTED TO NOTICE AN ODOR OF BURNING. I THOUGHT IT WAS COMING FROM THE AIR CONDITIONING SYSTEM. IMMEDIATELY; I TURNED OFF THE POWER PORT BUTTONS ON THE FWD JUMPSEAT PANEL (ANOTHER FLT ATTENDANT TURNED OFF THE CHILLER SYSTEM IN THE MID GALLEY). I WENT TO THE CAPT WHO WAS ON REST BREAK. HE BEGAN THE PROCESS OF TROUBLESHOOTING. THE ODOR SEEMED TO BEGIN MID ACFT AND FLOATED TO THE FWD CABIN. IT STAYED PRETTY MUCH THE ENTIRE FLT; VERY STRONG IN THE BEGINNING AND THEN LESSENED ONLY TO INTENSIFY ON LNDG. PAX WERE VERY MUCH ALARMED; THE FLT ATTENDANTS DID AS MUCH AS THEY COULD TO ASSURE THEM THAT THE CAPT WAS AWARE OF THE SITUATION AND WORKING TO CLR THE AIR. ONE OF MY PAX WAS VERY UPSET; AND ON LNDG; ONE OF THE COACH PAX YELLED AS SHE WAS LEAVING THAT WE HAD JEOPARDIZED HER LIFE. FLT ATTENDANTS COMPLAINED OF HEADACHES AND AFFECTED SINUSES.CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR FLEW SEVERAL TRIPS WITH THE SAME CREW AFTER THIS INCIDENT AND STATES THAT THE CAPT GAVE HER A COPY OF THE RPT THAT HE FILED WITH THE COMPANY. THE RPT INDICATES THAT THE CREW CONSULTED WITH MAINT AND CONTINUED THE FLT AFTER TURNING OFF THE AFFECTED OVEN; SECURING THE LEFT PACK; AND THE TRIM AIR SYSTEM. THE ACFT APPARENTLY HAD A HISTORY OF PROBS WITH THIS OVEN; AND HAD JUST COME OUT OF SCHEDULED MAINT WITHOUT AN INTERVENING FLT.