As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIRTY SOCK ODOR FROM APU. ODOR WENT AWAY AFTER APU BLEED TURNED OFF. THE AIRCRAFT WAS GROUNDED. FOUND APU AS SOURCE OF ODOR AND REPAIR ACCOMPLISHED JOB CARDS 26L00021001, 26L00021002 AND 26L00021004. FOUND FOUR DIFFERENT OIL LEAKS, APU COMPARTMENT CONTAMINATED WITH CLYCOL (DE-ICE FLUID). APU INTAKE ELBOW DE-LAMINATED AND SOAKED WITH OIL. NO ODOR PRESENT AFTER DECONTAMINATION.