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 SMELL THRU-OUT THE AIRCRAFT. MAINTENANCE FOUND OIL WETTING AT THE APU LOAD COMPRESSOR INLET, OIL IN THE AIR INTAKE AND OIL COMING FROM THE GEARBOX DRAIN.***SUPPLEMENTAL INFORMATION: MAINTENANCE REMOVED AND REPLACED APU IAW CARD 26L31049003. OPS AND LEAK CHECK GOOD.*** (CLOSED)