As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ODOR APPARENT AFTER TAKEOFF. DISAPPATED CLIMBING THRU 10,000FT. NOT DETECTABLE IN CRUISE. ODOR REAPPEARED ON DESCENT BELOW 10,000 FT. CHEMICAL ODOR SIMILAR TO BURNING OIL. O-RINGS ON APU OIL COOLER LEAKING. REPLACED O-RINGS ON OIL-COOLER.