As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A LOOSE GENERATOR GROUND CABLE BOLT WAS DISCOVERED WHILE TROUBLESHOOTING AN AMMETER SPLIT BETWEEN THE LEFT AND RIGHT ENGINE GENERATORS. AN AN610A BOLT WAS FOUND INSTALLED INSTEAD OF THE CORRECT AN6-6A BOLT. THE BOLT WAS TOO LONG AND TORQUE COULD BE REACHED.