As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) BEARING FAILED ON DRIVE SHAFT CAUSING ROTOR TO WOBBLE, THERE BY CAUSING THE ROTOR PEGS TO STRIKE THE DISTRIBUTOR PEGS. THIS RESISTANCE CAUSED THE TWO SCREWS WHICH ATTACH THE ROTOR TO THE TIMING GEAR TO SHEAR AND THE ROTOR BECAME DETACHED CAUSING SEVERE MISFIRING AS IGNITION WAS CREATED IN CYLINDERS THAT WERE NOT IN FIRING POSITION. VERY RARE OCCURRENCE.