As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURNED, DUE TO PILOT EXPERIENCING SMOKE IN THE COCKPIT. PILOT NOTICED THE RADAR INDICATOR BLINKING OFF AND ON. MAINT CONFIRMED THAT THE SMOKE WAS COMING FROM THE RADAR INDICATOR. THE RADAR SYSTEM WAS DEFERRED AND IT WAS CONFIRMED THAT NO POWER WAS TO THE SYSTEM. PARTS ORDERED. (K)