As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED SMOKE OBSERVED FROM SIDE PANEL. MAINTENANCE INSPECTED ANTI-COLLISION CIRCUIT BREAKER SWITCH AND WIRING, FOUND SWITCH INOP AND WIRE INSULATION BURNT ON LOAD SIDE OF SWITCH. REPAIRED DAMAGED ANTI-COLLISION LIGHT SWITCH WIRE IAW 402C WDM CHAPTER 20-10-01 AND REPLACED ANTI COLLISION CIRCUIT BREAKER SWITCH IAW MM 24-50-00.