As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLIGHT CREW FELT PROPELLER VIBRATION ON GROUND WHEN OUT OF FEATHER. A CRACK WAS FOUND COMING OUT FROM UNDERNEATH THE EROSION SHEATH AT APPROX. MID-WAY OF BLADE. THE CRACK WAS ON BOTH SIDES OF PROPELLER BLADE. BLADE CHANGED AND AIRCRAFT RETURNED TO SERVICE.