What was found
DURING RUN-UP, PILOT REPORTED LEFT ENGINE WOULD NOT START. LEFT MAGNETO REMOVED AND FOUND MAGNETO COUPLING PIN BROKEN AND CRANKSHAFT IDLER GEAR ASSY, P/N 71668, BROKEN. GEAR ASSEMBLY REPLACED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING RUN-UP, PILOT REPORTED LEFT ENGINE WOULD NOT START. LEFT MAGNETO REMOVED AND FOUND MAGNETO COUPLING PIN BROKEN AND CRANKSHAFT IDLER GEAR ASSY, P/N 71668, BROKEN. GEAR ASSEMBLY REPLACED.