As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENVIRONMENTAL FUMES IN AIRCRAFT, WORSE WHEN APU BLEED AIR IS ON. APU OIL LEVEL LOW AGAIN AFTER SERVICE (4) DAYS AGO. REMOVED AND REPLACED WITH REPAIRED APU DUE TO LEAKING OIL. OPS CHECKED GOOD. LEAK CHECKED GOOD. WORK DONE IAW 750 MM CHAPTER 49-10-00