As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STARTER DRIVE GEAR WEAR UNACCEPTABLE IAW TELEDYNE CONTINENTAL CSB 94-4 EVEN THOUGH THE SERVICE KIT REQUIRED BY TCM CSB 94-4 HAD BEEN PREVIOUSLY INSTALLED AT THE ENGINE OVERHAUL. SUSPECT CAUSE: CSB 94-4 MAY NOT BE SUFFICIENT. SUBMITTER RECOMMENDS FLEET DATA BE EXAMINED TO DETERMINE NUMBER OF OCCURRENCES.