As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT ON DESCENT -PERFORMED TSM 05-50-00-810-831-A. INSPECTED FOR CONTAMINATION PACK 1 IAW AMM 21-51-00. FOUND NO EVIDENCE OF CONTAMINATION. OPERATED APU BLEED TO DUPLICATE FAULT IAW AMM 12-33-21. NO ODOR DETECTED. A/C GOOD TO CONTINUE SVC