As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE, WE NOTICED A BURNING OIL SMELL THAT PERMEATED THE CABIN AND DISSIPATED OVERTIME. DURING CRUISE THERE WAS NO SMELL, BUT IT DID COME BACK ON DESCENT DURING ARRIVAL. PERFORMED CLEANING OF THE FWD AND AFT CABIN EVAPORATORS. BLEW DRAIN LINES CLEAR OF DEBRIS AND CLEANED FINS AS NEEDED. WORK PERFORMED IAW AMM 21-52-03.