As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#109, BOS-JAX. 'STRONG DIRTY SOCK ODOR ON DESCENT AND ARRIVAL STARTED AT 11000 FEET. TURNED OFF PACK 1 AND IT AIDED SOME. FRESH OIL FROM THE BOTTOM OF THE TAIL SEEPING FROM SEVERAL AREAS OF APU. APU LOW OIL WRITE UP AND SERVICED 3 DAYS AGO ODOR REPORTING FORM COMPLETED. ( APU SYSTEM ).' (SUPPLEMENTAL TO FOLLOW)