What was found
CABIN PRESSURIZATION CYCLING +/- 500 FPM ON CABIN CLIMB GAUGE. INFO: STEADY AT CRUISE; FL 350 3 + 30 INTO FLIGHT SWITCHED TO ALTN CTRL ON CABIN PRESS PANEL.<[01] PERFORMED CABIN PRESSCONTROL BITE #1 + #2 IAWMM 21-31-00; NO FAULTS. PERFORMED PACK #1;#2 SYSTEM TEST IAWMM 21-00-00; NO FAULTS. OK TO CONT PER MEL 21-51-01B SP#1;3;4;[02] PERFORMED CABIN PRESS CONTROL BITE #1 + #2 IAW MM 21-31-00; NO FAULTS. PERFORMED PACK #1;#2 SYSTEM TEST IAW MM 21-00-00; NO FAULTS. OK TO CONT PER MEL 21-51-05B SP#1;3;4