As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#321, BOS-PBI. 'FUMES THROUGH 6000FT GOT WORSE ON GROUND; INSPECTED APU AND FOUND EVIDENCE OF OIL ON INTAKE DIFFUSER. REMOVED LOAD COMPRESSOR PLUG IAW AMM 49-20-00, AND FOUND OIL. REINSTALLED PLUG AS REQUIRED. CLEANED AREA W/ EVIDENCE OF OIL PER AMM 49-20-00. PERFORMED LEVEL A DECONTAMINATION W. ENG BLEEDS AND REPLACED RECIRC FAN FILTERS PER AMM 21-00-00-615-802A.'