As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOW VOTLAGE LIGHT WITH FULL LOAD. (PROP ICE, PITOT HEAT). AIRCRAFT LANDED. MECHANIC INSPECTED ALTERNATOR ATTACHMENTS, WIRING, AND BELT TENSION. NO DISCREPANCIES WERE NOTED. AIRCRAFT WAS TEST RUN ON THE GROUND AT SEVERAL POWER SETTINGS AND VARIOUS LOADS. MECHANIC COULD NOT DUPLICATE PROBLEM AND RETURNED ACFT TO SERVICE.