As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE CLIMBING THROUGH 9000 FEET, SMOKE STARTED COMING OUT OF THE OVERHEAD PANEL. ALL OVERHEAD PANEL SWITCHES WERE SHUTOFF AND AIRCRAFT RETURNED TO POINT OF DEPARTURE (RIW). FOUND RECOGNITION LIGHT SWITCH LOOSE AND WIRE INSULATION BURNED. MAINTENANCE REPLACED THE CONNECTOR AND RESECURED TO THE SWITCH. SYSTEMS TESTED OK. (M)