What was found
#1 PACK LIGHT ILLUMINATES WITH RECALL AND EXTINGUISHES WITH RESET. GROUNDED - YES. PERFORMED PZTC BITE REF B737-900 FIM 21-62 TASK 801. ON PREV FLT ON ZONE TEMP CONTROLLER 1, FOUND SRADA EXIT WAS FAULTED. PUSHED VERIFY ON CONTROLLER AND GREEN GO LIGHT ILLUMINATED. REF FIM 21-62 TASK 853, CYCLED 28VDC FOR LEFT SRADA AND PERFORMED PZTC BITE VERIFY. GREEN GO LIGHT ILLUMINATED. PERFORMED RAM AIR SYSTEM OPS TEST REF B737-900 AMM 21-51-00. NO FAULTS WERE FOUND DURING OPS TEST. OPS TEST GOOD. THIS CLEARS MEL 21-32B. ALL PLACARDS REMOVED. SEAMC WILL NOTIFIED.