As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A AIRPLANE HAS FAIRLY STRONG OILY SMELL ENTIRE FLIGHT SEEMS TO BE COMING FROM AIR CONDITIONING SYSTEM BECAME STRONGER ON DESCENT UNACCEPTABLE LEVEL. BURNOUT/CLEARED A/C PACKS AND DISTRIBUTION DUCTS FOR ODOR AS PER MM 21-53-00-16-802 AND REPLACED COALESSER BAG AS PER MM 21-54-05-400-861 OPS CK GOOD OK TO CONT SERV SEE LP 992574 ITEM 3.