As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(YD5R) WHILE COMPLING WITH A 500 HR INSPECTION, THE BRUSH HOLDER ASSY WAS REMOVED FOR INSP OF BRUSHES. IT WAS FOUND THAT (1) BRUSH HAD A BROKEN WIRE. THE WIRE HAD PULLED AWAY FROM THE CONTACT BUTTON. TT ON COMPONENT ONLY 30.0 HOURS. IT WAS LIKELY CAUSED BY AN IMPROPER CRIMP OR SOLDIER JOINT DURING MFG.