As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED THAT STARTER CONTINUED TO CRANK AFTER KEY WAS REMOVED AND ANYTIME BATTERY POWER WAS PRESENT. TROUBLESHOOTING BY MAINTENANCE PERSONNEL. FOUND WRONG PN STARTER SOLENOID INSTALLED. RESEARCH OF AIRCRAFT RECORDS FOUND THAT THIS PART HAD NEVER BEEN REPLACED AND MUST HAVE BEEN INSTALLED AT MANUFACTURE.