As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
() CHARGING SYS REPORTED AS INTERMITTENT. UPON TROUBLESHOOTING, FOUND BOTH F1 AND F2 POSTS WERE LOOSE ON ALTERNATOR`S BRUSH BLOCK. THE BRUSH BLOCK IS PLASTIC AND THERE IS NO LOCKING DEVICE ON THESE POSTS. ENGINE VIBRATION IS MOST LIKELY THE CAUSE OF THE NUTS LOOSENING ON POSTS. SUGGEST SOME SORT OF POSITIVE LOCK DEVICE BE ADDED TO THIS ASSY.