As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL APPROACH, FLIGHT 4477 EXPERIENCED PROPELLER OIL FLUCTUATIONS FROM 0-60 PSI. INFLIGHT SHUTDOWN OF LEFT ENGINE PERFORMED. FLIGHT LANDED WITHOUT INCIDENT. MECHANIC CLEANED CONNECTOR PLUGS ON PRESSURE TRANSDUCER AND COCKPIT INDICATOR. OPERATIONAL CHECKS, GOOD. AIRCRAFT RETURNED TO SERVICE.