What was found
LOST CABIN PRESSURE CONTROL ON 1 AND 2. MANUAL CONTROL WORKED. CONTACT TOMC WITH FINDINGS EWRMM WORKING ITEM FOLLOWING FIM 21-31 FAULT TREE 803, PERFORMED BITE OF BOTH AUTO AND REPLACED AUTO CABIN PRESSURE CONTROLLER 1 AND 2 REF AMM CABIN PRESSURE CONTROLLER 1 AND 2. FOUND FAULT LOW INFLOW ON 1 21-31-02. VERIFY TEST PASSED NO FAULTS. NO FURTHER DEFECTS NOTED AND FAULT AC PWR OFF ON 2. AFTER FURTHER TROUBLESHOOTING BOTH AT THIS TIME. PARTS USED: 19-2131-9-0004,QTY :1 BOXES FOUND TO BE OPERATING CORRECTLY. AS PERCAUTIONARY REMOVED 1379294,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1379294 SN OFF 6665 ADDED SECOND PART CHANGED. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1374155 SN OFF 7665 CONTROLLER, CAB OFF 19-2131-9-0004 7665 ON 19-2131-9-0004 0080 CONTROLLER, CAB OFF 19-2131-9-0004 6665 ON 19-2131-9-0004 2290