What was found
(CAN) ENGINE RUNNING ROUGH AND BACKFIRING. INVESTIGATION FOUND THE MAGNETO ROTOR SHAFT BEARING WORN RESULTING IN THE BREAKER POINTS MOVING OUT OF TOLERANCE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) ENGINE RUNNING ROUGH AND BACKFIRING. INVESTIGATION FOUND THE MAGNETO ROTOR SHAFT BEARING WORN RESULTING IN THE BREAKER POINTS MOVING OUT OF TOLERANCE.