What was found
MKE/DSM - FLT 1058 - CREW HAD THE RT PITOT HEAT ANNUNCIATOR ILLUMINATE IN CRUISE FLIGHT. THEY CONSULTED DISPLATCH AND DECIDED TO RETURN TO MKE DUE TO POSSIBLE WEATHER DELAYS AT THEIR FINAL DESTINATION (OMA). ONCE AT MKE, MAINTENANCE OPERATIONALLY CHECKED THE SYSTEM, BUT COULD NOT DUPLICATE THE PROBLEM. THEY INSPECTED THE SWITCH, PITOT TUBE, AND ASSOCIATED WIRING. WITH NO OTHER DISCREPANCIES NOTED, THE AIRCRAFT WAS RETURNED TO SERVICE. (X)