As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: MILD TO MODERATE OIL ODOR NOTICED IN FLIGHT DECK AND CABIN. ON GROUND WITH APU BLEED AND IN-FLIGHT DURING CRUISE, DESCENT, APROACH AND LANDING. MAINTENANCE FOUND EVIDENCE OF OIL ON APU PLENEUM AND APU AIR INTAKE. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)