As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON REMOVING INBOARD SECTION OF LEADING EDGE TO REPLACE MIXTURE CONTROL CABLE ON LEFT SIDE, FOUND OIL PRESSURE LINE WORN OVER HALF WAY THROUGH WHERE LINE WAS RUBBING ON NOSE RIB FLANGE ON LEADING EDGE. REMOVED RT SIDE AND FOUND OIL LINE ON THAT SIDE RUBBING ALSO. SUBMITTER STATED LINES SHOULD BE REPOSITIONED FOR CLEARANCE.