What was found
STRONG ODOR NOTICED ON DESCENT, UNABLE TO ISOLATE WHICH PACK WAS PRODUCING SMELL. ENGINE BLEEDS OK, APU BLEED ON SEEMS TO PRODUCE SMELL. REMOVED AND REPLACED LT AND RT OZONE FILTERS, INSPECTED APU INLET, NO OIL LKS NOTED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
STRONG ODOR NOTICED ON DESCENT, UNABLE TO ISOLATE WHICH PACK WAS PRODUCING SMELL. ENGINE BLEEDS OK, APU BLEED ON SEEMS TO PRODUCE SMELL. REMOVED AND REPLACED LT AND RT OZONE FILTERS, INSPECTED APU INLET, NO OIL LKS NOTED.