What was found
FL 360 CABIN ALTITUDE WAS UNCONTROLLABLE IN AUTO OR MANUAL MODE FOLLOWED QRH PROCEDURES. PERFORM FIM TASK 21-31-00-810-808-A TO STEP 8 NO DEFECT NOTED, NO MORE TIME TO T/S MEL REMAINS OPEN. (M) PROCEDURES C/W. T/S CABIN PRESSURIZATION CONTROL SYSTEM IAW FIM TASK 21-31-00-810-808 STEP 8 PREFORMED AMM TASK 21-31-00-700-808 FOUND TO BE TRASITORY CONDITION OF THE CABIN PRESSURIZATION CONTROL SYSTEM OPS CHECK GOOD NO DEFECTS NOTED REACTIVATED SYSTEM IAW AMM 21-31-03-440-801 AND AMM 21-31-04-440-801 MEL RESTORED