As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
( YKER) ENGINE WAS SENT FOR REPAIR DUE TO GENERATING METAL. UPON DISASSEMBLY, FOUND THAT THE SHAFT ON THE GEAR HAD FRACTURED APPROX 2.325 IN FROM THE FWD END OF THE SHAFT AT A RADIUS OF APPROX 0.75 IN. THE RELATIVE MOTION BETWEEN THE PIECES WAS THE CAUSE OF THE REPORTED METAL.