As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING ROUTINE 100 HOUR INSPECTION OIL DRAINED FROM T/R GEARBOX, FOUND EXCESSIVE SLUG & METAL PARTICLES ON CHIP DRAIN PLUG. FLUSHED GEARBOX. ADDED FRESH OIL. DISCONNECT INPUT SHAFT & ROTATED INPUT GEAR WITH T/R ATTACHED TO OUTPUT SIDE. NOISE NOTED FROM INPUT SIDE OF GEAR. ASSEMBLY REMOVED FROM SERVICE AND RETURNED TO ENSTROM FOR WARRANTY AND EVALUATION. REPORT OF FINDINGS REQUESTED.