What was found
AT PROPELLER CHANGE RUN-UP, SAFETY SCREW WHICH HOLDS DOWN LINK PIN TO LINK ARM SHEARED OFF CAUSING THE BLADE TO MOVE INTO FEATHER. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AT PROPELLER CHANGE RUN-UP, SAFETY SCREW WHICH HOLDS DOWN LINK PIN TO LINK ARM SHEARED OFF CAUSING THE BLADE TO MOVE INTO FEATHER. (X)