What was found
ACFT RETURNED TO DEPARTURE DUE TO THE CABIN TEMPERATURE WAS UNCONTROLLABLE AND TOO HOT IN CABIN. AN EMERGENCY WAS DELCARED, AND LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS GROUNDED. ACCOMPLISHED TSM 21-61-00, AND FOUND THE RIGHT COMPRESSOR OUTLET TEMPERATURE SENSOR AT FAULT. REPLACED THE SENSOR 32HH IAW AMM 21-61-11.