As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON FINAL FOR LANDING, PILOT AND PASSENGERS NOTICED AN ELECTRICAL SMELL, SECONDS LATER WHITE SMOKE FILLED THE CABIN COMING FROM BEHIND INSTRUMENT PANEL. ALL CIRCUIT BREAKERS WERE PULLED AND AIRCRAFT SHUT DOWN. INSPECTION REVEALED DIRECTIONAL GYRO HAD SHORTED INTERNALLY AND MELTED DOWN.