What was found
LAX - FLT 4750 - SMOKE BEING EMITTED FROM BEHIND THE CAPTION PANEL. MAINTENANCE REPLACED FLIGHT DIRECTOR MODE SELECTOR UNIT WHICH INDICATED BURNED LIGHTING. TEST OF SYSTEM REVEALED NORMAL, NO SMOKE NOTICED. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LAX - FLT 4750 - SMOKE BEING EMITTED FROM BEHIND THE CAPTION PANEL. MAINTENANCE REPLACED FLIGHT DIRECTOR MODE SELECTOR UNIT WHICH INDICATED BURNED LIGHTING. TEST OF SYSTEM REVEALED NORMAL, NO SMOKE NOTICED. (X)