As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NR 2 STARTER GENERATOR FAILED AFTER 317.8 HOURS (TSO). FOUND BRUSHES BADLY WORN, MISSING AND SMALL PIECES OF BRUSH MATERIAL WERE FOUND UNDER THE STARTER GENERATOR ON AIRCRAFT. REPLACED STARTER GENERATOR WITH OVERHAULED UNIT, ADJUSTED AND OPS CHECKED OK.