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 SUPPLEMENTARY PROCEDURE FOR ELIMIN OF ODDO FUMES IN COCPIT WHEN X-BLEED CLOSED AND #1 PACK OFF. DIRTY SOCK SMELL DISIPATED.-REF TSM 05-50-00-810-63 VERIFIED #1 CONTAMINATE. DIRTY SOCK SMELL NOTICIED ONLY WITH PACK #1. VERIFIED NO LEAKS FROM APU. NO EVIDENCE OF ENGS LEAKS AT THIS TIME. SEE LOP PAGE 2553181-2