What was found
PILOT REPORTED MINOR ENGINE ROUGHNESS IN-FLIGHT AT HIGH ALTITUDES. IN-FLIGHT MAGNETO CHECK SHOWED MAGNETO ON LEFT SIDE TO BE COMPLETELY DEAD. POINTS AND ROTOR AND CONDENSER ARE OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PILOT REPORTED MINOR ENGINE ROUGHNESS IN-FLIGHT AT HIGH ALTITUDES. IN-FLIGHT MAGNETO CHECK SHOWED MAGNETO ON LEFT SIDE TO BE COMPLETELY DEAD. POINTS AND ROTOR AND CONDENSER ARE OK.