As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT INTO KPDK FROM KJZI, WITH ONE PASSENGER THE NR 1 ALT WARNING LIGHT COME ON. TRIED RESETTING THE SYSTEM DID NOT HELP. PERFORMED LOAD SHEDDING AND LANDED WITHOUT INCIDENT. FOUND NR 1 ALT HAD AN OPEN FIELD IN THE ALTERNATOR ITSELF.