As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING NORMAL OPERATION, RING GEAR CRACKED, CHIP LIGHT ILLUMINATED, AIRCRAFT RETURNED FOR LANDING. GEARBOX REMOVED FOR FURTHER INVESTIGATION. REVEALED BROKEN TOOTH ON RING GEAR, BROKEN TOOTH ON PLANETARY PINION AND DAMAGED SUN GEAR. GEARBOX REPAIRED. FULL INSPECTION FOR METAL CONTAMINATION CARRIED OUT.