As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF, OIL SMELL IN COCKPIT DISSIPATED QUICKLY ON APPROACH OIL SMELL IN CABIN AFT SMOKE DETECTORS SOUNDING. MAINTENANCE IN PROGRESS TROUBLSHOOTING FUMES IN CABIN. C/W OPN 5088 CABIN SMOKE T/S AND C/W OPN 5089 PNEU DUCT BURNOUT CKS GOOD. NO MORE SMELL NOTED.