As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TER - FL 11 EN ROUTE MAD-PHL, CREW NOTED AN ACCUMULATION OF SMOKE IN THE COCKPIT WHICH WAS COMING FROM UNDER THE INSTRUMENT PANEL. CREW COULD NOT ISOLATE THE PROBLEM, DECLARED AN EMERGENCY AND DIVERTED TO TER. AS THE AIRCRAFT DESCENDED, THE SMOKE ABATED. FLIGHT LANDED WITH NO FURTHER INCIDENT. MAINTENANCE FOUND THE WEATHER RADAR INDICATOR WAS THE PROBLEM. (M)