As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING VISUAL INSPECTION IT WAS NOTED THAT THE STARTER-GENERATOR BRUSHES WERE WORN TO NEAR 1/4 LIFE REMAINING MARKS. UPON REVIEWING THE HISTORY ON THIS STARTER-GENERATOR IT WAS DISCOVERED THAT THE COMPONENT HAD ACCRUED 362.8 HOURS SINCE OVERHAUL. THIS STARTER-GENERATOR HAS A TBO OF 1200 HOURS AND A BRUSH INSPECTION EVERY 600 HOURS. NO OTHER ANOMALIES WERE NOTED. THIS IS THE FIFTH PREMATURE FAILURE OF THIS PART NUMBER STARTER GENERATOR OBSERVED BY THIS PART 135 CH IN THE PAST 8 MONTHS.