As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OWNER REPORTED 5 MINUTES AFTER TAKEOFF AT 2500 ASL, ALL 3 PROPELLER BLADES DEPARTED. THERE WAS ONE VIOLENT SHAKE AND THEN SMOOTH GLIDING TO SAFE LANDING OFF AIRPORT. PRELIMINARY EXAM INDICATES ENGINE MOVED ENOUGH TO CAUSE CARBURETOR TO SEPARATE PREVENTING OVERSPEED. SEPARATED BLADES WERE NEVER LOCATED. PROPELLER TO BE REPLACED BY OWNER, THIS IS AN EXPERIMENTAL HOMEBUILT AIRCRAFT.