What was found
THIS WAS A HOSPITAL TRANSFER FROM CRESTON, IA TO DES MOINES, IA. ON THE FIRST LEG BETWEEN KOXV AND CRESTON APPROXIMATELY HALF WAY (15MIN FLIGHT TIME) THE T/R CD INOP CAUTION LIGHT CAME ON AND WENT OFF AGAIN AFTER A FEW SECONDS. AROUND 5MIN LATER IT CAME ON AGAIN AND STAYED ON. THE EMG PROCEDURE STATES "LAND AS SOON AS PRACTICAL". I THEREFORE DECIDED TO ABORT THE FLIGHT AND RETURN BACK TO KOXV AS THIS IS WHERE THE AIRCRAFT'S MAINTENANCE FACILITY IS LOCATED. I REPORTED THE ISSUE TO MERCY COMM CENTER AND RLANDED BACK AT KOXV WITHOUT FURTHER ISSUES.