What was found
ENGINE WILL NOT RUN ON LEFT MAGNETO. INSPECTION IN THE WORKSHOP REVEALED THAT THE WOODRUFF DRIVE KEY BETWEEN THE DRIVE SHAFT AND DRIVE COUPLING WAS MISSING.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ENGINE WILL NOT RUN ON LEFT MAGNETO. INSPECTION IN THE WORKSHOP REVEALED THAT THE WOODRUFF DRIVE KEY BETWEEN THE DRIVE SHAFT AND DRIVE COUPLING WAS MISSING.