As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: STRONG SMELL OF FUMES FROM PREFLIGHT TO LANDING. DEFINITELY IN THE FLIGHT DECK AND FLIGHT ATTENDANTS ALSO REPORTED IN THE CABIN. DURING TROUBLESHOOTING FOUND OVERALL APU AREA CONTAMINATED WITH OIL AND SOOT STAINED PRIMARILY IN THE OIL COOLER AREA, BURNED OIL SMELL AND SOME SMOKE UPON DOORS OPENING. **SUPPLEMENTAL REPORT WILL BE SUBMITTED**(OPEN).