What was found
LEFT ENGINE RUNNING ROUGH, FOUND LEFT MAGNETO DEAD. REMOVED AND REPLACED MAGNETO, CLEANED AND GAPPED PLUGS. GROUND RUN, OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LEFT ENGINE RUNNING ROUGH, FOUND LEFT MAGNETO DEAD. REMOVED AND REPLACED MAGNETO, CLEANED AND GAPPED PLUGS. GROUND RUN, OK.