As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU BLEED AIR: UPON STARTING THE APU AND THE BLEEDS THERE WAS A SMELL OF OIL IN THE AIR//CORRECTIVE ACTION// COMPLETED BORESCOPE INSP OF APU IAW TC-C68-49-1001 AND PROVIDED PHOTOS TO CUSTOMER. NDN. COMPLETED ECS DUT BURN OUT RUN IAW TC-680-21-120905M NDN. R/R COALESCER SOCK FROM WATER SEPERATOR IAW CE-680 AMM 21-21-03 NDN. C/W LEAK CHECK OF WATER SEPERATOR AND CONFIRMED NO SMELL OF OIL IN CABIN OR COCKPIT NDN.