What was found
INTERMITTENT BRAKE OVHT RED MASTER WARNING IN FLIGHT WITH #4 BTMS VARYING BETWEEN 0-20. RAN QRH AND RETURNED TO FIELD. (FLIGHT 5510 FILED CLOSED)INTERROGATED MDC FOR BRAKE OVHT FOUND B1 CODE 007476. TROUBLESHOT PER CRJ 700 FIM 32-46-01. FOUND RH OTBD BRAKE TEMP SENSOR TO BE AT FAULT. C/W REMOVAL AND REPLACEMENT OF RH OTBD THERMOCOUPLE SENSOR IN REFERENCE TO CRJ 700 AMM 32-46-01. SELF TEST GOOD, NO FURTHER DEFECTS NOTED AT THIS TIME. A/C OK FOR SERVICE.