As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE MAINTENANCE INSPECTION OF THE TAIL ROTOR DRIVESHAFT, CENTER SECTION, AFT COUPLING RIVETED ATTACHMENT ONE OF THE SPECIAL RIVET SUPPORT BLOCKS WAS FOUND TO BE NOT SQUARE TO SHAFT CENTERLINE. FURTHER DETAILED EXAMINATION SHOWED ENTIRE COUPLING MOVEMENT RADIALLY RELATIVE TO SHAFT EXCEEDS .1250 INCH. SUSPECT DRIVESHAFT FAILURE IMMANENT.