As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING SCHEDULED MAINTENANCE, AT BRUSH INSPECTION IT WAS FOUND THAT THE BRUSHES INSTALLED IN THIS STARTER-GENERATOR WERE. THIS BRUSH IS ONLY APPROVED FOR THE STARTER GEN MODELS 23079-009 AND 23079-000-2.THE BRUSHES WERE REMOVED AND REPLACED WITH FAA-PMA LONG LIFE BRUSH PART NO.M23088-1320, WHICH IS APPROVED FOR THIS STARTER-GENERATOR MODEL 23079-000-1 WHEN USED ON THE FAIRCHILD SA227AC AIRCRAFT. THE STARTER GEN WAS RETURNED TO SERVICE.