As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE, SMOKE WAS OBSERVED COMING FROM CENTER CONSOLE. EXECUTED EMERGENCY PROCEDURES FOR SMOKE IN THE COCKPIT. DECLARED EMERGENCY AND EXECUTED AN UNEVENTFUL LANDING. PRIOR TO LANDING, THE SOURCE OF SMOKE CEASED AND THE SMOKE DISSIPATED. (X)