As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DESCENDING OUT OF 5000FT WE DETECTED FUMES IN THE COCKPIT RAN COM 3.226 AND SUSPECTED PACK 1 THE SMELL DID NOT GO AWAY SO WE ISOLATED PACK 2 AND THE SMELL DISIPUTED. -ISOLATED ALL BLEED AIR IAW TSM 05-50-00-810-831, NO ODOR NOTED PREFROMED ENG RUN WITH ENG BLEED AND APU BLEED UNABLE TO DUPLICATE ODOR.