As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUMES IN FRONT OF CABIN DIRTY SOCK SMELL. DISAPATED WITH PACK 2 OFF AND X-BLEED VALVE CLOSED-PERFORMED OPERATIONAL TEST OF PACK TEMPERATURE CONTROL SYSTEM. TEST OK. IAW AMM 21-61-00-710-001-A. C/W TSM 05-50-00-810-831-A CABIN ODOR IDENTIFICATION. RAN BOTH PACKS 1 & 2 ISOLATED BLEED SUPPLY TO BOTH PACKS FROM ENGS AND APU. COULD NOT DUPLICATE ODOR.