As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PROPELLER GOVERNOR CONTROL ARM CAME LOOSE FROM GOVERNOR JUST AFTER TAKEOFF CAUSING PROPELLER TO START GOING TO FEATHER AND A LOSS IN POWER. SUBMITTER RECOMMENDATION, CHECK TORQUE ON CLAMP SCREW EVERY 100 HOURS. OVERHAULED BY ROCKY MOUNTAIN PROPELLERS.