As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT EXPERIENCED LOSS OF OIL PRESSURE. UPON INVESTIGATION, FOUND RT ENGINE OIL PRESSURE LINE CORRODED THROUGH AT THE LOCATION UNDER THE FLOORBOARDS ON THE RIGHT SIDE OF AIRCRAFT WHERE LINE GOES OVER PRESSURIZATION DUCT. SUBMITTER FELT IT WAS DUE TO CONDENSATION AT THE POINT THE LINE AND DUCT INTERSECTED.