As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REMOVAL OF THE EPICYCLIC ASSEMBLY FROM THE MAST IT WAS DISCOVERED THAT THE EPICYCLIC / MAST BOLTS (6EA) HAD BECOME LOOSE. THE 6 BOLTS ARE HELD IN PLACE BY 3 STAINLESS STEEL DOUBLE LOCKING TAB WASHERS AND DOUBLE LOCKED WITH A SPECIAL STAR WASHER. THE BOLT HOLDING THE STAR WASHER IN PLACE WAS PROPERLY SAFETIED AND APPEARED TO BE TORQUED.