What was found
FLT DECK TEMPS - LEVEL 2. DUE TO HISTORY OF FLT DECK TEMP TOO COLD. PERFORM COMPLETE BITE OF THE ZONE TEMP CONTROLLER AND BOTH PACK TEMP CONTROLLERS REF FIM MM 21-51-00 FIG 104 AND 21-60-00 FIG 104. REPLACE FLT DECK ZONE DUCT OVERHEAT SWITCH S21 PCN 563-0043 REF MM 21-61-01-401 AND REPLACE LEFT PACK LOW LIMIT VALVE PCN 643-9025 REF MM 21-51-11-201. VERIFY EFFECTIVITY WITH IPC. ACPD CALL OUT. FOUND LOW LIMIT LEFT PACK VALVE FAILED BITE TEST. REPLACED VALVE. OP CHECKED GOOD.