As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECT NR 1 ENGINE FOR EXCESSIVE OIL USEAGE / CONSUMPTION. INSTALLED NEW SEAL ON ENGINE. LT ENGINE OIL PRESSURE LIGHT CAME ON VERY DIM. FEATHERED LT ENGINE (PRECAUTIONARY) CORRECTION. FOUND CORROSION ON OIL PRESSURE TRANSMITTER CONNECTOR PLUG FOR GEARBOX. CLEANED AND GROUND CHECK, NORMAL.