What was found
ROUGH RT ENGINE, LT MAGNETO OPERATION DURING RUN-UP CHECK. REMOVED MAGNETO, PN BL-349350-4, SN F11EA076R, MODEL S6RN-1225 AND FOUND MAGNETO GEAR BUSHING AND RETAINER BROKEN. CONSULTED WITH MFG FOR ADDITIONAL INSTRUCTIONS. REMOVED OIL PAN AND RECOVERED MISSING PIECES OF BUSHING AND RETAINER. VERIFIED ALL PIECES RECOVERED BY MATCHING UP BROKEN, MISSING PIECES. FOUND MAGNETO GEAR ROTATED WITH INTERMITTENT BINDING, GRINDING. INSPECTED ACCESSORY GEARS FOR CONDITION WITH NO DEFECTS NOTED.