As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MALFUNCTION OF THIS DIMMER ASSY OF COCKPIT OVERHEAD BACKGROUND LIGHT CAUSED SMOKE IN THE COCKPIT AND AIR TURN BACK DURING FLIGHT ROUTE OF TPE TO ANC ON 7-13-98. EVA REPAIR STATION (FAA CIRS NR QOCY349J) INSPECTED AND FOUND NO HIDDEN DAMAGE, EXCEPT THE OVERHEAD LIGHT DIMMER ASSY INOPERATIVE. REPLACED A NEW DIMMER ASSY IAW MM 33-11-03. AIRCRAFT RETURNED TO SERVICE. (X)