What was found
WHILE TURNING TO ESTABLISH LOC RECEIVED A RT WING OVERHEAT INDICATION. SHORTLY AFTER THE ANNUNCIATOR ILLUM THERE WAS A SMALL AMOUNT OF SMOKE IN THE COCKPIT. FOLLOWING EMERGENCY CHECKLIST, REDUCED SPEED IN ORDER TO EXTEND THE LG. CONTACTED APPROACH AND DECLARED AN EMERGENCY. BETWEEN DECLARING AN EMERGENCY AND COMPLETING THE EMERGENCY CHECKLIST THE WING OVERHEAT LIGHT HAD EXTINGUISHED AND THE SMOKE HAD DISSIPATED BY DEACTIVATION OF SYSTEMS. DID AN AIR TURNBACK TO KBUR AS THE RISK OF AN ACTUAL FIRE HAD DIMINISHED. LANDED WITHOUT INCIDENT. INSPECTED RT WING, NO EVIDENCE OF A FIRE. DISCOVERED THE RT HAND COOLING TURBINE SEAL HAD FAILED. R&R THE RT COOLING TURBINE WITH A SERVICEABLE UNIT. R&R RT LG WW WING OH SENSOR.