As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS - STRONG DIRTY SOCK SMELL DURING DESCENT. CONCENTRATION FROM ROW 46 TO COCKPIT. SMELL DISSIPATED WHEN APU BLEED WAS SELECTED. ACCOMPLISED REMOVAL AND INSTALLATION OF #2 ENG PER TASK CARD J321-72-HWI-01 AND 321-72-HWI-02 AND LEVEL C DECON PER TASK CARD E1128-321-21-007. SMELL CHECK GOOD. NO ODOR NOTED. A/C OK FOR SERVICE.