As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THIS PN 640802, GEAR WAS PURCHASED NEW FROM THE OEM. IT WAS RECEIVED IN ORIGINAL TCM PACKAGING. DURING ASSY OF THE ACCESSORY DRIVE ADAPTER, THE NEW PN 640802 GEAR WAS FOUND TO HAVE 6 MISFORMED TEETH. MACHINING OF THESE 6 GEAR TEETH APPEARS TO BE INCOMPLETE WHICH WILL NOT ALLOW THE ASSY TO TURN.