As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F/A REPORTED BURNED OR ELECTRICAL BURNING ODOR IN ADT GALLEY. ODOR ENDED BEFORE STARTING APU, BUT INTENSIFIED ONCE APU STARTED. INSPECTED GALLEY AND CABIN LIGHTING, RECIRCULATION FAN, AFT CARGO BAY. NO DEFECTS NOTED. COMPLIED WITH SEVERAL APU RUNS WITH BLEEDS ON AND OFF COULD NOT DUPLICATE BURNING ODOR AT ANY TIME DURING TROUBLESHOOTING. ACFT OK FOR CONTINUED SERVICE.