As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT ON TAKEOFF ROLL ON SLIGHT OIL ODOR IN CABIN AND COCKPIT. COM PROCEDURE WAS COMPLETED AND PACK NR 2 SHUT OFF FOR REMAINDER OF FLIGHT. PERFORMED TSM 05-50-810-831-A (CORS), FOUND THE NR 1 ENGINE DE-OILER OVERBOARD VENT LEAKING OIL. R & R MATING RING & SEAL ASSY IAW AMM 72-60-31. AS FAULT CONFIRMATION RAN BOTH ENGINES WITH BOTH PACKS ON, NO FUMES NOTED OR OIL ODOR AT THIS TIME IAW AMM 71-00-00.