As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PJL-FLIGHT 3800 CREW REPORTED A BURNT OIL ODOR FROM BLEEDS WITH POWER BELOW 30 PERCENT TORQUE DURING DESCENT. ODOR WAS MORE NOTICEABLE ON THE NR 2 ENGINE. MAINTENANCE RAN THE AUXILIARY POWER UNIT BLEED AND FOUND NO DEFECTS. BOTH ENGINES WERE RUN WITH P3 AIR ON, AND NO OIL ODOR WAS NOTED FROM EITHER ENGINE. AIRCRAFT RETURNED TO SERVICE.