As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OIL FUME SMELL-VERY APPARENT IN COCKPIT- WHEN BOTH PACKS ARE ACTIVATED THROUGHOUT WHOLE FLIGHT. FOUND LOOSE DUCT IN #1 PACK. OPERATED APU AND BOTH ENGINES AFTER TIGHTENING DUCTS WITH BOTH PACKS ON AND FULL HEAT, NO SMELL PRESENT. OK FOR SERVICE AT THIS TIME.