What was found
(CAN) RT ENGINE, LT MAGNETO. DAMAGE WAS DISCOVERED DURING ACCOMPLISHMENT OF AN UNRELATED AIRWORTHINESS DIRECTIVE KNOWN AS, AD2002-20-51. REMOVAL OF ALL ACCESSORIES ON THE ACCESSORIES HOUSING WAS REQUIRED, FOR THIS AD. WHEN THE MAGNETO WAS REMOVED THE MAGNETO GEAR RETAINER ASSY AND BEARING PULLED OUT OF THE ENGINE TOGETHER WITH THE DRIVE COUPLING YET AGAIN.UPON FURTHER INSPECTION NO DAMAGE TO THE GEAR RETAINER ASSY AND BEARING WAS FOUND AND ASSEMBLY WAS REINSTALLED.ALSO THE BEARING RECESS WAS INSPECTED AND CHECKED O.K.