As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 944, BZN-JFK. OIL FUMES EVENT INITIALLY OCCURED AT FL 250 ON DECENT. ODORS DISSIPATED FUMES AGAIN OCCURED ON FINAL APPROACH AT 3000FT. DID NOT FOLLOW ISOLATION GUIDE; COMPLIED WITH INFORMATION NOTICE 2017-T015, STEPS 1 AND 2. IDENTIFIED ODOR TO BE APU OIL COOLING FAN. PERFORMED REMOVAL AND INSTALLATION OF APU OIL COOLING FAN PER AMM 49-52-51. OPS CHECK GOOD, NO LEAKS NOTED. DECONTAMINATION LEVEL A ACCOMPLISHED PER AMM 21-00-00-615-802-A. AIRCRAFT IS OK FOR SERVICE