As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED A TAIL ROTOR GEARBOX CHIP LIGHT IN FLIGHT AND PERFORMED A PRECAUTIONARY LANDING AT IOWA CITY, IA AIRPORT. MECHANIC INSPECTED TAIL ROTOR CHIP DETECTOR AND FOUND A CAT D CHIP. PERFORMED MAINTENANCE IAW AMM 64-40-00, 6-1. PERFORMED MOC WITH NO FURTER DEFECT NOTED.