What was found
AFTER TAKEOFF AND DURING CLIMB WHEN THE CREW NOTICED A PROBLEM ON THE RATE OF CLIMB PRESSURIZATION INDICATOR, THE CREW COULD NOT CONTROL THE PRESSURIZATION, RETURNED TO BASE. PERFORMED RIGGING OF THE AFT SERVICE DOOR IAW MD-80MM 52-42-00 OPS CHECKED GOOD, AIRCRAFT ACCOMPLISHED THE PRESSURIZATION CHECK IAW MD-80 MM 21-32-00, NO MTX DISCREPANCY.