As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE BETWEEN LPLA AND KWRT, THE AIR CONDITIONING SYSTEM INTERMITTENTLY PRODUCED THE STRONG SMELL OF OIL IN THE COCKPIT. THE FLIGHT CREW SUSPECTED A TURBOCOMPRESSOR OIL SEAL FAILURE. INSPECTION ON THE GROUND IN KWRT SHOWED THE TC'S TO BE NORMAL, WITH NO LEAKAGE OF LOSS OF OIL. NO OTHER SOURCE COULD BE IDENTIFIED FOR THE INTERMITTENT SMELL. (M)