As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DESCENDING OUT OF 5000 FT, A SMELL WHAT WAS A SUSPECTED FUME EVENT FOLLOWED COM 3.226 UPON SHUTTING OFF PACK 2 THE SMELL SEEMED TO DISSIPATE. R & R NR 1 ENG AND 2 DEOILER SEALS IAW AMM 72-60-31. OPS CHECKED GOOD. R & R THE NR 1 AND 2 RECIRCULATION FILTER IAW AMM 21-21-413. PREFORMED PACK BURNOUT IAW TSM 05-50-00-810-831-A. OPS CHECKED GOOD. ON ALL AIR BLEED. ACFT OK FOR SERVICE.