What was found
PACK L OVERHEAT AT LT PACK OUTLET OR LT PACK COMPRESSOR OUTLET OR LT PACK FLOW CONTROL VALVES (FCV) ARE CLOSED DUE TO: FCVS FAILED CLOSED, FCVS LATCHED CLOSED BY CABIN TEMP CONTROLLER (CTC) BECAUSE OF FAULT, OVERHEAT, OR PACK CONTROL SWITCH COMMANDED OFF, OR NO PNEUMATIC AIR AVAILABLE TO PACK. DURING TROUBLESHOOTING FOUND DIFF PRESS SENSOR CTC WITH A BENT PIN, AS PRECAUTIONARY REPLACED FLOW SENSOR VALVE. ALSO ACP MAT TEST OF BOTH FLOW CONTROL VALVES, NO FAULTS NOTED FOR LT PACK. REPLACED THE LOWER FCV. SYS CHECKS OK.