As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STARTER ADAPTER SHAFT GEAR AT BEARING END IN ENGINE AND NEEDLE BEARING IN ENGINE DAMAGED. NO EVIDENCE OF LACK OF LUBRICATION. NEEDLE BEARING DESTROYED AND CASE DAMAGED. SUBMITTER STATED THIS IS THE THIRD FAILURE OF THE EQ6642 ADAPTER IN THE LAST 2 YEARS.