What was found
NOTED CAST PERMANENT MAGNET ASSEMBLY HAS ROTATED ON ROTOR SHAFT. IMPULSE COUPLING APPEARS TO HAVE ENGAGED AT HIGHER RPM; FLYWEIGHTS DAMAGED. TORSION SHOCKING DUE TO UNDERWEIGHTED PROP.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NOTED CAST PERMANENT MAGNET ASSEMBLY HAS ROTATED ON ROTOR SHAFT. IMPULSE COUPLING APPEARS TO HAVE ENGAGED AT HIGHER RPM; FLYWEIGHTS DAMAGED. TORSION SHOCKING DUE TO UNDERWEIGHTED PROP.