As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED VERY STRONG DIRTY SOCK ODOR ON DESCEND AND DURING TAXI IN; FOUNG HYDRAULIC FITTING ON GREEN PTU MODULE IN WHEELWELL LEAKING INTO BELLY OF KEEL BEAM AND MIGRATING TO APU INLET. REPLACED O RING FOR FITTING. CLEANED OUT ALL RESIDUAL FLUID IN KEEL AREA AND BELLY. RAN PACKS FOR SEVERAL HOURS. NO SMELL NOTED. GOOD FOR SERVICE.