What was found
WHILE ENROUTE, PASSING THROUGH 13,000 FT, THE FLIGHT CREW REPORTED DETECTING AN ELECTRICAL SMOKE ODOR IN THE COCKPIT. THE CREW SELECTED BLEED AIR OFF AND NOTICED MINOR SMOKE COMING FROM THE NR 2 COMM CONTROL HEAD. AN EMERGENCY WAS DECLARED AND THE ACFT RETURNED TO DEPARTURE AND LANDED WITHOUT INCIDENT. THE NR 2 COMM CONTROL HEAD WAS REPLACED, A GROUND RUN AND FLIGHT CHECK WAS PERFORMED WITH ALL INDICATIONS NORMAL. THE ACFT WAS RETURNED TO SERVICE. (K)