As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH THE APU SUPPLYING AIR TO THE PACK, AN OIL SMELL WAS NOTED ALONG AN ANTI-ICE DUCT WING WARNING MESSAGE. MAINTENANCE INSPECTED AND PERFORMED AN OPERATIONAL TEST OF THE RIGHT HAND FUSELAGE LOOPS AND THE APU. MAINTENANCE REMOVED REPLACED THE LOOP A18WK. MAINTENANCE ALSO FOUND THE APU OIL OVER SERVICED AND PROPERLY REDUCED THE OIL LEVEL. OPERATIONAL CHECKS WERE GOOD AT THIS TIME. AIRCRAFT WAS RELEASED FOR SERVICE.