What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO CLT DUE TO THE FLIGHT CREW REPORTING THAT THE FLIGHT DECK AIR TEMP ROSE OVER 100 DEGREES F WITH WARM AIR BLOWING FROM VENT. THE AIRCRAFT LANDED SAFELY AT CLT WITHOUT INCIDENT. MAINTENANCE REPLACED LEFT HAND PACK COMPRESSOR TEMPERATURE SENSOR 12HH PER AMM 21-61-11 (AALA202508014332) AND THE FLIGHT DECK TEMPERATURE SENSOR 21HK PER AMM 21-63-17. (AALA202508019046) A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO DEFECTS NOTED.