As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAGNETO FAILED IN-FLIGHT. INSPECTION REVEALED BROKEN CONTACT SPRING. SPRING BROKE NEAR TRANSITION FROM FLAT SECTION TO RADIUSED EDGE. SUBMITTER SUSPECTED IMPROPER TEMPER OF SPRING OR OTHER MANUFACTURING DEFECT. MAG HAS ONLY 8 HOURS SINCE NEW. (X)