What was found
BOTH F/A'S REPORTED BURNING ODOR IN AFT GALLEY. APU WAS WORKING AT THAT TIME. AFTER REPORT FROM F/A, APU WAS SHUTDOWN. COMPLIED WITH AIR CONDITIONING CHECKLIST. RAN APU FOR 10 MIN WITH BLEED AIR ON AND RECIRCULATION FAN ON. INSPECTED MAPCO'S, MAPCO PLUGS, OVERHEAD WORKING LIGHTING AND EXPOSED WIRES. ALSO INSPECTED APU GROUND STUD. NO DEFECTS NOTED. REPLACED MAPCO'S AND C/W ODOR REMOVAL OF A/C DUCTS. (REF AMM TASK 21-00-00-160-801) AS A PRECAUTION IAW AMM TASKS 53-41-01-000-801 AND 53-41-01-400-801 FOR REMOVAL AND REINSTALLATION OF PANEL 145 C2 (APU GROUND STUD ACCESS) COULD NOT DUPLICATE BURNING ODOR AT THIS TIME. ACFT OK FOR CONTINUED SERVICE.