What was found
TAIL ROTOR OUTPUT SHAFT STUDS FOR HUB ATTACHMENT, BADLY STEPPED. REMOVED AND REPLACED TAIL ROTOR GEARBOX.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
TAIL ROTOR OUTPUT SHAFT STUDS FOR HUB ATTACHMENT, BADLY STEPPED. REMOVED AND REPLACED TAIL ROTOR GEARBOX.