As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS DIRTY SOCK ODOR THROUGHOUT CABIN DURING DESCENT IN VISIBLE MOISTURE. NO PASSENGER OR CREW ISSUES. MAINTENANCE COMPLETED SOF EVENT IAW JOB CARD 26L00021001, APU FOUND TO BE THE SOURCE OF ODOR. FOUND EVIDENCE OF OIL LEAK FROM OIL COOLER & OR COOLING FAN ASSEMBLY. OIL RESIDUE IN DUCT BETWEEN THEM. SUPPLEMENTAL INFORMATION: MAINTENANCE REMOVED AND REPLACED APU FAN OIL COOLER IAW AMM 49-52-51. OPS AND LEAKS CHECK GOOD. (CLOSED)