As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) SMOKE WAS SEEN COMING FROM THE NAV LIGHT SWITCH. THE SWITCH FELL OUT AND SPARKS WERE SEEN INSIDE THEOPENING. THE SPARKING STOPPED AFTER APPROXIMATELY 30 SECONDS. THE FAULT WAS CONFERMED BY MAINTENANC E. NO OTHER DAMAGE WAS EVIDENT. SWITCH IS TO BE REPLACED.