As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE THE LT ENGINE OIL TEMP STEADILY CLIMB OUT OF LIMITS, OIL TEMP 190, AND OIL PRESSURE 58. THE CREW SHUTDOWN THE LT ENGINE AND RETURNED TO DEPARTURE WITHOUT FURTHER INCIDENT. MX TROUBLESHOT THE OIL TEMP WIRING CIRCUIT AND FOUND PROTECTIVE COATING ON GROUND WIRE DAMAGED AT GROUND STUD. CLEANED GROUND STUD AND REPAIRED GROUND WIRE IAW MM STANDARD WIRING PRACTICES CH 20-10-13. RAN ENGINES AT TAKEOFF POWER IAW MM 71-00-00. OPS CHECKED GOOD.