As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING LOGGING OPERATION, PILOT REPORTED GEARBOX CHIP WARNING INDICATION AND LANDED IN SERVICE LANDING. INSPECTION OF CHIP DEECTORS REVEALED METALLIC FUZZ. DETECTORS CLEANED, AIRCRAFT GROUND RUN AND TEST FLOWN IN ACCORDANCE WITH BP252 MAINTENANCE MANUAL 84.10.00 P.103, RETURNED TO SERVICE. PROBLEM RECURRED, METAL DETECTED ON CHIP DETECTORS. GEARBOX REMOVED FROM SERVICE. (X)