As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH PILOTS AND ALL 3 FA'S SMELLED A DIRTY SOCK SMELL TURNING BASE TO FINAL IN FRONT TO BACK OF AIRCRAFT.-PERFORMED TROUBLESHOOTING PROCEDURES IAW TSM 05-50-00-810-831-A. VERIFIED THAT ODER WERENT DETECTED ON EITHER PACK WITH ENGINE AND OR APU BLEED RUNNING. AC OK FOR CONTINUED SERVICE