As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A COMPLETE O/H OF THE ENGINE AND MAGNETOS WAS ACCOMPLISHED BY MFG ON 6/20/2002. THE PLASTIC GEAR (10-357583) DID NOT SEEM TO BIND WITH ANY FOREIGN MATERIALS. THE GEAR SEEMED FADDED TO A YELLOWISH COLOR. IT DOES NOT SEEM LIKE THIS GEAR WAS REPLACED AT O/H (421.3). IF THIS GEAR WAS REPLACED AT O/H MAYBE THERE WAS A BATCH OF BAD GEARS. THIS GEAR IS CRACKED AND MISSING ABOUT 8 TEETH IN 3 AREAS.