As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE NO START. TROUBLESHOOTING ISOLATED TO MAGNETO. OPENED MAGNETO HOUSING TO INSPECT. REMOVED DISTRIBUTOR BLOCK AND GEAR ASSEMBLY. NOTICED ROTOR GEAR APPEARED DETACHED. REMOVED GEAR AND FOUND SHAFT HAD BROKEN AT AREA BELOW POINT CAM SLOT. SLOTTED PORTION OF SHAFT REMAINED IN ROTOR GEAR. BREAK AREA APPEARED TO HAVE HAD MATERIAL DEFECT/CORROSION FROM DISCOLORED DARK AREA. SUBMITTER STATED DUE TO LOW TIME, SUSPECT DEFECTIVE MATERIAL.