As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED BENDIX MAG AS A FACTORY OVERHAULED UNIT FROM TELELDYNE CONTINENTAL. INSTALLED MAG, RAMP TEST GROUND RUN OK. AIRCRAFT FLEW FOR 45 MINUTES AND HAD COMPLETE ENGINE FAILURE DUE TO MAG FAILURE. FOUND BOTH BREAKER POINTS NOT GROUNDING TO MAG CASE. SUBMITTER RECOMMENDED TELEDYNE REVIEWS OVERHAUL PROCEDURES AND POINTS MOUNTING METHODS.