As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, HAD FUEL SMELL COMING FROM AIR CONDITIONING. APU NOT RUNNING. TROUBLESHOT FUEL SMELL DOWN TO ENGINE NR 1 EXCEPT SMELL IS NOT FUEL, BUT OIL. ISOLATED OIL SMELL COMING ONLY FROM ENGINE NR 1 WITH EITHER PACK RUNNING. WITH ENGINE NR 2 OR APU RUNNING PACKS THERE IS NO APPARENT SMELL BUT WITH PATH NR 1 OR NR 2 RUNNING FROM ENGINE NR 1 THERE IS A STRONG BURNED OIL SMELL COMING OUT OF THE PACK VENT. (K)