As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF DMI 7604044, DIRTY SOCK SMELL COMING FROM PACK 1. ACCOMPLISHED TSM 05-50-00-810-831-A TO IDENTIFY CAUSE OF SMELL. DETERMINED CAUSE OF SMELL TO BE CAUSED BY APU BLEED. REF LOG PAGE 2157895-2, R & R RECIRCULATING FILTERS IAW AMM 21-21-41. PERFORMED PACK BURNOUT IAW AMM 21-00-00.