As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT WAS UNABLE TO GET PROPELLER ON LOCKS AT ENGINE SHUT-DOWN. INSPECTION REVEALED SEPARATION OF CABLE ASSEMBLY WHERE THE MOUNTING BARREL THREADS INTO OUTER SPIRAL ASSEMBLY. THERE ARE NO PROVISIONS FOR THIS AREA TO BE SAFTIED. PART WAS NOT BROKEN, ONLY UNSCREWED FROM POSITION.