As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN CRUISE AT 6000 M.S.L. WHEN THE PROPELLER SEPARATED FROM THE ENGINE. THE AIRCRAFT LANDED IN A FIELD AND HAD SUBSTANTIAL DAMAGE. THE PILOT WAS NOT INJURED. SUSPECT IMPROPER BOLTS USED WHEN PROPELLER WAS ATTACHED. THE BOLTS AND/OR PROPELLER WERE NOT RECOVERED.