As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTICED A NOXIOUS ODOR IN CABIN DURING VERY HEAVY RAIN AND HAIL WITH PACKS ON APU BLEED AIR. SMELL WAS THROUGHOUT CABIN AND COCKPIT. ODOR WAS OILY DIRTY SOCK SMELL. TURNED OFF APU BLEED TO PACKS AND ODOR DISSAPATED. R & R O-RINGS ON APU GENERATOR RECEPTACLE CONNECTOR IAW COMPONENT MM 24-23-51.