What was found
MKE/MQT - FLT 1233 - WHILE IN CRUISE FLIGHT, CREW NOTICED THE RT PROP HEAT INDICATING ONLY 8 AMPS IN AUTO OR MANUAL MODES. THE WEATHER IN THE MQT AREA INDICATED ICING CONDITIONS, SO THE CREW ELECTED TO RETURN TO MKE AFTER CONSULATION WITH MAINTENANCE. AFTER AN UNEVENTFUL LANDING, MAINTENANCE FOUND THE RT PROP DE-ICE BRUSH BLOCK WITH WORN BRUSHES. THE BRUSH BLOCK WAS REPLACED AND THE AIRCRAFT WAS RETURNED TO SERVICE. (X)