As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: STRONG ODOR ON DESCENT. MAINTENANCE NOTED A FAINT SMELL OF OIL COMING FROM THE APU WHILE ACCOMPLISHING THE SMOKE ODOR FUME TROUBLESHOOTING TASK CARDS 26L00021001 AND 26L00021002. MAINTENANCE ACCOMPISHED THE DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM PER TASK CARD 26L00021014. A SATISFACTORY LEAK AND OPERATIONAL CHECK WAS ACCOMPLISHED WIOTH NO ISSUES OR ODORS NOTED.