As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISTRIBUTOR ARM COMING LOOSE FORM THE GEAR. WHEN THE ARM COMES LOOSE, IT CAUSES WEAR ON THE ARM CTR AND AS THE CTR WEARS TO A LARGER DIAMETER HOLE, THE ARM FLIES OUT CLOSING THE GAP AND GRINDS INTO THE CONTACTS OF THE DISTRIBUTOR BLOCK. THE MAG RAN NORMAL AND WAS FOUND DURING AN INSPECTION.