What was found
CANNOT CONTROL CABIN TOO HOT EVEN IN CRUISE DEBRIEF CREW AFT FLT ATTENDANT HAD TO EVACUATE FWD DUE TO AC BEEN HOT. FOUND AFT GALLEY VENT OUTBOARD FAN CHECK VALVE STUCK CLOSED. PHOTOS. FOUND LEFT GALLEY VENT FAN MAKING GRINDING SOUND. REMOVED AND REPLACED LEFT LAV/GALLEY VENT FAN REF AMM 21-26-01-400-801. OPERATIONAL TEST PASED. PARTS USED: 27-2126-9-0002,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1548650 SN OFF 1020 FAN, LAV/GALLEY OFF 27-2126-9-0002 1020 ON 27-2126-9-0002 1400