As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OPERATOR COMPLAINED THAT THE ENGINE STARTER WOULD NOT ENGAGE. AFTER INSPECTION, FOUND THAT THE STARTER FIELD CASE HAD SEPARATED FROM GEAR HOUSING. A DETAILED INSPECTION OF THE FIELD CASE SCREW HOLES REVEALED THAT MOST OF THE THREADS WERE STRIPPED OUT AND HOLES WERE ELONGATED. WOULD RECOMMEND THAT AT EACH 100 HR/ANNUAL INSPECTION, PERFORM TORQUE CHECK OF GEAR HOUSING TO CASE ATTACH SCREWS AND REPAIR AS REQUIRED. (K)