As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) POST-FLIGHT INSPECTION REVEALED THAT ONE OF THE BRUSHES WAS WORN DOWN TWICE AS MUCH AS THE OTHER VISIBLE BRUSH. UPON REMOVAL, IT WAS THEN NOTED THAT ONE OTHER BRUSH WAS BROKEN AND/OR BURNT OFF. HOWEVER, THE STARTER/GENERATOR WAS STILL FUNCTIONING AS IT GAVE NO FAILURE WARNING INDICATION.