As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSP OF TAIL ROTOR GEARBOX CHIP DETECTOR DISCOVERED CRACK IN VERTICAL FIN NOSE RIB AT TAIL ROTOR GEARBOX ATTACHMENT POINT. FURTHER INVESTIGATION REVEALED THAT TAIL ROTOR GEARBOX FITTING WAS ALSO CRACKED AT UPPER LT CORNER. ACFT WAS REMOVED FROM SERVICE FOR REPAIR/REPLACEMENT OF PARTS.