As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISASSEMBLED GEARBOX TO INSPECT GEARBOX FOR MAKING METAL. FOUND CAUSE TO BE THE P.T.O. GEAR, IMPROPER MACHINING ON THE GEAR TEETH. DISCOVERED THE TORQUE METER GEAR TO BE MAKING METAL DUE TO THE IMPROPER MACHINING ON THE P.T.O. GEAR TEETH.