As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIRTY SOCK ODOR AFTER TAKEOFF. ODOR STAYED THE WHOLE TIME. GROUNDED - YES. PERFORMED TSM 21-52-00-810-810-A, PACK 1 ACM FAULT. RAN APU & FOUND THE NR 1 A/C PACK COMPRESSOR INLET TEMP 57C, OUTLET TEMP 66C NR 2 PACK COMPRESSOR OUTLET TEMP 107C. ACM SUGGESTED TO BE MAIN PROBLEM FOR TROUBLESHOOTING. REF LP 100177575 FOR CORRECTIVE ACTION.