As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FA'S REPORT DIRTY SOCK SMELL ON DESENT INTO PHL. AFT CABIN ONCE ON GROUND WITH APU BLEED ON, REPORT OF SAME SMELL-PERFORMED DECONTAMINATION OF THE ENVIROMENTAL CONTROL SYSTEM IAW AMM 21-00-00 CONTIMINATION PRESENT WHENAPU BLEED ON INSPECTED APU COMPARTMENTNO LEAKAGE FOUND