What was found
DURING A ROUTINE INSPECTION OF THE MAIN ROTOR DRIVESHAFT IT WAS DISCOVERED THAT THE WEAR ON THE SPLINES WAS BEYOND LIMITS. AFTER ONLY 37 PERCENT OF THE TIME WAS USED ON THE SHAFT. REPLACED UNIT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING A ROUTINE INSPECTION OF THE MAIN ROTOR DRIVESHAFT IT WAS DISCOVERED THAT THE WEAR ON THE SPLINES WAS BEYOND LIMITS. AFTER ONLY 37 PERCENT OF THE TIME WAS USED ON THE SHAFT. REPLACED UNIT.