As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: CAPTAIN REPORTS APU BLEED LOCATED IN ALL AREAS OF AIRCRAFT DURING ALL PHASES OF FLIGHT WITH PACKS RUNNING NOTICEABLE DIRTY SOCK SMELL WHILE ON THE GROUND THROUGH TAKEOFF AND ON ARRIVAL OUT OF 12000FT. MAINTENANCE FOUND APU OIL LEAKING FROM LOAD COMPRESSOR DIFFUSER INTO AIR INTAKE PLENUM. AN APU CHANGE HAS BEEN DECLARED. MAINTENANCE REMOVED AND REPLACED APU IAW MCM 49-94-11. OPS CHECKS NORMAL. NO LEAKS NOTED.