What was found
CABIN ALT AUTO 1 EICAS M THE AUTOMATIC PRESSURIZATION CONTROLLER 1 BITE FOUND A FAILURE. CABIN ALT UP TO APPROX 13000 FEETAS PER TOMC REQUEST REPLACED CABIN AUTO 1 PRESSURE CONTROLLER IAW AMM 21-31-02-004-00 & AMM 21-31-02-404-005 UP TO SECTION 3(D)1. REPLACED CABIN OUTFLOW VALVE ASSY IAW AMM 21-31-03-002-001 & AMM 21-31-03-402-006. ALL OUTFLOW VALVE OPS AND INDICATIONS NORMAL. PRESSURIZATION CONTROL SYSTEM SYS TEST CARRIED OUT IAW AMM 21-31-00-705-009 UP TO STEP 3.T.3. CONTINUE FROM STEP 4 PRESSURIZATION CONTROL SYSTEM SYSTEM TEST CARRIED OUT IAW AMM 21-31-00-705-009 UP TO STEP 3.T.3. LOW FLOW INDICATION TEST TO BE CARRIED OUT AS AN LMC ITEM IAW AMM 21-31-00-705-009. ALL OTHER TESTS COMPLETED & CHECKED GOOD.