As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE GENERATOR WAS JUST O/H, WITHOUT DISASSEMBLING THE GENERATOR, LOOKING IN TO PULLEY SIDE, YOU COULD SEE THAT THE ARMATURE HAD PARTIALLY UNWOUND. TO THE POINT WHERE ONE ARMATURE WIRE WAS RUBBING LARGE AMOUNTS OF FIELD COVERING OFF. THIS CAUSED THE ARMATURE WIRE TO BREAK. THIS FIELD COVERING FOD CIRCULATED THROUGH THE COMMUTATOR/BRUSHES TO DISINTEGRATE. THINK THEY AREN’T WINDING THE ARMATURES TIGHT ENOUGH. (NM01199419959) (K)