As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FINAL DESCENT AND APPROACH THE F/A REPORTED LIGHT SMOKE AND OILY ODOR. THE ACFT LANDED WITH OUT INCIDENT. THE ACFT WAS REMOVED FROM SERVICE. R & R NR 1 ENGINE FUEL HEATER IAW MM-72-01-40. R & R O-RINGS. PN: AS3209-110; MS9386-112. THE OPS CHECK WAS GOOD. THE ACFT WAS RETURNED TO SERVICE.