What was found
(CAN) RT ENGINE, LT MAGNETO ENGINE HOURS: 745.2 DAMAGE WAS DISCOVERED DURING ROUTINE SCHEDULED MAGNETO REPLACEMENT. WHEN THE MAGNETO WAS REMOVED THE MAGNETO GEAR RETAINER ASSY AND BEARING PULLED OUT OF THE ENGINE TOGETHER WITH THE DRIVE COUPLING.UPON FURTHER INSPECTION IT WAS DISCOVERED THAT THE GEAR RETAINER ASSY BEARING WAS DESTROYED AND REQUIRED REPLACEMENT. THE BEARING RECESS WAS INSPECTED AND CHECKED O.K. THE BEARING WAS REPLACED WITH NEW AND ASSEMBLY WAS REINSTALLED. NO FURTHER ACTION.