What was found
CAB ALT EICAS FL360 AUTO 1. EMERG DESCENT 10K. CA B ALT LESS 12K . OPS NOR M AUTO2. R/R CABIN PRESSURE CONTROLLER 1. REF AMM 21-31-02. OPS CHECK GOOD PARTS USED: 19-2131-9-0004,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1588665 SN OFF 0507 CONTROLLER, CAB OFF 19-2131-9-0004 0507 ON 0000 CONTROLLER, CAB OFF 19-2131-9-0004 0507 ON 19-2131-9-0004 0759 C/W BOTH CABIN PRESS CONTROLLERS BITE TEST REF AMM TASK 21-31-00-705-085. NO FAULTS. C/W INSPECTION/CHECK OUTFLOW VALVE REF AMM TASK 21-31-03-202-038. OPERATES NORMALLY. C/W FIM 21-30 TREE802. NFF. REPLACED CPC#1 PRECAUTIONARY. GOOD FOR SERVICE.