What was found
STRONG ODOR MOSTLY IN AFT CABIN AND ON FLIGHT DECK. FLEW WITH CABIN FANS OFF, HI FLOW, AND NR 1 PACK OFF. BECAME TOLERABLE. *S/D* ISOLATED OIL SMELL TO APU. REPLACED APU REF MM 49-11-98.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
STRONG ODOR MOSTLY IN AFT CABIN AND ON FLIGHT DECK. FLEW WITH CABIN FANS OFF, HI FLOW, AND NR 1 PACK OFF. BECAME TOLERABLE. *S/D* ISOLATED OIL SMELL TO APU. REPLACED APU REF MM 49-11-98.