As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) METAL PARTICLES FOUND IN SUMP FILTER AT 50 HOUR INSPECTION. TRANSMISSION REMOVED AND SENT FOR OVERHAUL. WHEN ROTOR BRAKE QUILL WAS REMOVED I NOTICED HEAVY WEAR ON THE TEETH OF THE PINION. INSPECTION OF THE SPIRAL BEVEL GEAR REVEALED TWO BROKEN TEETH AND HEAVY WEAR MARKS ON BACK SIDE OF ALL REMAINING TEETH.