As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) GOVERNOR CIRCLIP EPOXY HAD DETERIORATED TO THE EXTENT THAT THE END DRIVE HAD FALLEN OFF ALLOWING THE CIRCLIP TO MOVE AND AND EVENTUALLY WEAR A GROOVE IN THE SHAFT WHICH ALLOWED THE CIRCLIP TO FALL OFF. AS SUCH, THERE WAS NO LOCKING DEVICE HOLDING THE END DRIVE IN PLACE.