As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE FROM RME TO BED PILOT REPORTS THE RIGHT ENGINE OVERSPEEDED TO 3500 RPM AND HAD NO CONTROL. SHUT THE ENGINE DOWN AND LANDED IN EEN NO PROBLEM. MAINTENANCE RAN THE RIGHT ENGINE AND IT MADE TAKEOFF POWER 2700 RPM, BUT HAD NO CONTROL OF PROPELLER. FOUND PROP CONTROL CABLE BROKEN. GOING TO REMOVE AND SCRAP BOTH THE ENGINE AND PROPELLER BECAUSE OF OVER SPEEDING CONDITION.