As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN RANGE, UNS FAILED AND WAS FOLLWED BY SMOKE ALL AROUND UNIT. THE UNIT RE-ILLUMINATED AND WOULD NOT RESPOND TO OFF SWITCH. F/D FAILED, NAV AND A/P IND LIGHTS FLASHED ALONG WITH RADAR. CAPTAINS ADI BECAME ERRONEOUS. REMOVED UNS UNIT TO INSPECT FOR POSSIBLE ELECTRICAL FIRE OR SMOKE DAMAGE. CONFIRMED UNS-1C UNIT IS BAD, PERFORMED OPERATIONAL CHECKS OF OTHER SYSTEMS.