What was found
THE FLIGHT CREW FOUND THE LEFT PROP WOULD NOT FEATHER DURING A GROUND AUTOFEATHER TEST, THEY ALSO NOTICED LEFT ENGINE LOW OIL PRESSURE INDICATION WAS ILLUMINATED. AN ENGINE SHUTDOWN WAS MADE AND MAINTENANCE FOUND METAL PARTICLES IN THE OIL. THE ENGINE WAS REPLACED AND SENT TO PW AND C. INITIAL INVESTIGATION FOUND ONE FIRST STAGE REDUCTION PLANETARY GEAR HAD TURNED ON THE BEARING RACE, SEVERELY SCORING IT. THE SUN GEAR WAS ALSO SPALLING, P/N 3108356-01. (M)