As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE DOING AN ANNUAL INSPECTION, BOTH MAGS WERE FOUND TO HAVE LOOSE DISTRIBUTOR BLOCKS. THE SCREWS IN THE LEFT MAGNETO WERE COMPLETELY OUT AND THE BLOCK FELL OUT WHEN THE COVER WAS REMOVED. THE INSIDES OF BOTH BLOCKS WERE VERY DIRTY AND DID NOT LOOK LIKE THEY HAD BEEN EVER OPENED FOR INSPECTION OR LUBRICATION.