As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HOT BLEED AIR LEAK NOTICED IN REAR BAY COMPARTMENT - SOURCE IS UNKNOWN - ODOR IN CABIN AND REAR BAY COMPARTMENT WITH EITHER APU BLEED AIR OR ENGINE BLEED/AIR VALVE OPEN WAS ALSO NOTED. MAINTENANCE CHANGED THE COALESOR SOCK BUT COULD NOT FIND EVIDENCE OF A BLEED AIR LEAK. BOTH ENGINES AND THE APU WERE RUN, INDEPENDENTLY AND SIMULTANEOUSLY, WITH NO LEAKS OR ODORS NOTED.