As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A STRONG OILY SMELL THROUGHOUT AIRCRAFT WHEN APU BLEED IS TURNED ON. MAINTENANCE TROUBLESHOT CABIN AIR QUALITY PER J/C 26L00021001 AND FOUND SOURCE OF ODOR TO BE APU. PERFORMED J/C 26L00021002, APU SMELL IN CABIN, AND FOUND APU BAD. REMOVED AND REPLACED APU ASSEMBLY PER J/C 26L31049003. OPS AND LEAK CHECK GOOD. DECONTAMINATED ECS PER J/C 26L00021004.