As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT #861, BOS-SJU. DURING FINAL APPROACH TO LAND "DIRTY SOCK " ORDER WAS NOTICED IN THE COCKPIT MD CABIN APU WAS TURNED ON AFTER LANDING AND SMELL STAYED ; INSPECTED SYST AS PER INFO NOTICE 2017-T015 I FOUND APU LEAKING OI L PERFORMED ENGINE RUN WITH BOTH ENGINES BLEED AND BOTH PACKS RUNNING NO FURTHER EVIDENCE OF OIL SMELL NOTICE