As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - ROTTEN DIRTY SOCK AND OR CURING SEALANT SMELL IN COCKPIT OBSERVED IN FLIGHT DURING DESCENT. OPERATED ECS USING APU BLEED AIR AND ENGINE BLEEDS AT VARIOUS TEMP SETTINGS AND ENGINE POWER SETTINGS NO ABNORMAL SMELLS NOTED. COULD NOT DUPLICATE. RETURNED TO SERVICE. NO PARTS REPLACED.