As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS PART WAS REPAIRED AND RETURNED TO SERVICE 6-3-99 WITH NO TIME IN SERVICE SINCE THAT DATE. INSTALLED ARMATURE IN MOTOR AND CONDUCTED TESTING PER OHM 24-09-02. MOTOR FAILED TESTING. UPON DISASSEMBLY, DISCOVERED THE COMMUTATOR IN THE CONDITION SHOWN IN THE PHOTOGRAPH. THIS UNIT AND 2 OTHERS WERE RETURNED TO VENDOR FOR WARRANTY CONSIDERATION. (X)