As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DESCENDING THROUGH ABOUT 15,000 FEET, A DIRTY MUST SOCK SMELL WAS NOTED. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU . **SUPPLEMENTAL REPORT FOR AALA202305023454: MAINTENANCE ACCOMPLISHED ENHANCED DECONTAMINTION OF THE ENVIRONMENTAL CONTROL SYSTEM PER TASK CARD 26L00021014 AND A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ISSUES NOTED. ** (CLOSED)