As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT. DIRTY SOCK SMELL (STRONG) THROUGHOUT AIRCRAFT. APPEARS RELATED TO PACK1. APPROX 4000'-ACCOMPLISHED TSM 05-50-00-810-831-A. INSPECTED APU BAY AND INLET. INSPECTED ENG 1 AND ENG 2 FOR LEAKS. RAN PACK OFF OF ALL 3 SOURCES OF BLEED AIR. COULD NOT DUPLICATE SMELL. NO DEFECTS NOTED. NO ODOR PRESENT. A/C OK FOR SVC.