As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT CREW REPORTED SMOKE AND BURNING SMELL COMING FROM OVERHEAD CONTROL PANEL. IGNITION SWITCH STUCK IN A POSITION. MTC LOWERED PANEL TO FIND INDICATION OF EXCESSIVE HEAT IN AREA OF IGNITION SWITCH. REPORTED MINOR WIRE DAMAGE. MTC VERIFIED SWITCH SHORTED AND OVERHEATED. REPLACED SWITCH.