What was found
AIRCRAFT BEGAN TO LOOSE PRESSURAZATION DURING CLIMB CABIN ALTITTUDE CONTINUED TO INCREASE UNTIL CLIMB STOPPED DESCENT BEGAN-C/A-DEFERRED AUTO AND MANUAL PRESSURAZATION M PROCEDURES C/W REF MEL 21-19 AUTH 040646DM-C. TS IAW 21-31-00-810-801-A REMOVED AND REPLACED DIGITAL CONTROLLER IAW EMB145 21-31-01 PERFORMED FUNCTION TEST OF AUTO MODE IAW 21-31-00-700-802-A AND FUNCTION TEST OF MANUAL MODE IAW 21-31-00-700-801-A BOTH OPS CHECK GOOD MEL ITEM RESTORED REVERSED M PROCEDURES