As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT 5003, DIRTY SOCK SMELL WHILE PULLING INTO GATE. SUSPECT APU BLEED. CORRECTIVE ACTION: CHECKED APU WITH BLACK LIGHT NO OIL LEAKS NOTED. NO OIL IN INTAKE DUCT. FOUND BOTH ENGINES OVER SERVICED DRAIN 4.5 QTS OUT OF ENG 2 AND 1.5 OUT OF ENG 1. C/W LEVEL A DECONTAMINATION OF THE ECS SYSTEM. REPLACED LEFT AND RIGHT RECIRCULATION FILTERS. (LP 5684840)