As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STARTER BENDIX DRIVE HAS NOT BEEN FULLY RETRACTING AFTER ENGINE START AND HAS BEEN SCRAPING THE ENGINE STARTER RING GEAR, CAUSING WEAR ON STARTER RING GEAR AND BENDIX ENGAGEMENT GEAR. WHEN THE BENDIX DRIVE DOES NOT DISENGAGE FROM STARTER RING GEAR COMPLETELY, THE BENDIX DRIVE DISENTIGRATES ALSO DAMAGING THE ENGINE STARTER RING GEAR. THIS IS A REOCCURING PROBLEM. WITH SILVER BENDIX DRIVES, P/N EBB-75A.