As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PROPELLOR DEPARTED FROM ENGINE. BOTH MECHANICS THAT INSTALLED PROPELLOR AND TORQUED NUT, CLAIMED 720 FT LBS CALCULATED WITH THEIR BODY WEIGHTS ON A LEVER ARM TO THE SPLINED WRENCH AND WITNESSED THE LOCK IN PLACE. MORE TO FOLLOW WHEN NUT HAS BEEN INDEPENDENTLY TESTED. BLADES WERE DESTROYED IN THIS INCIDENT AND BENT THE PILOT TUBE AS WELL.