As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON DISASSEMBLY I FOUND THE SHAFT IN TWO PIECES. THE STANDARD 64-0197 SHAFT IS A SOLID ONE PIECE SHAFT. THE SHAFT THAT WAS REMOVED FROM THIS UNIT WAS MACHINED INTO TWO DIFFERENT PIECES, AND WAS HELD TOGETHER BY TWO PINS. THIS IS NOT A STANDARD REPAIR. ONE OF THE FINS FAILED AND SHAFT SEPARATED.