As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAINT BURNT OIL ODOR BEGAN ABOUT 1.5 HRS INTO FLIGHT. NOTICED ON FLIGHT DECK & IN CABIN. 10-11-07 CREW ELECTED TO TURN OFF LEFT PACK AND AIR QUALITY THEN IMPROVED SUBSTANTIALLY. COMPLETED A PACK BURN. THEN RAN ENG NR 1 FOR 2 HOURS, WHICH REMOVED ODOR, REPLACED TRIM AIR MODULATING VALVE AND CABIN FILTERS.