As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT WITH NR 1 REG DEFERRED, LOST NR 2 REG. USED MANUAL PRESSURIZATION FOR THE REST OF FLIGHT. ACN RELEASED FOR SERVICE PER MEL/CDL: 21-31-04-01-A. DEACTIVATED IN CLOSED POSITION. ENSURE CAB DIF PRESS IS ZERO PRIOR TO OPENING ANY DOOR." SWAPPED FWD TO AFT CABIN PRESSURE OUTFLOW VALVE AS PER WRI 21-30/7595. REMOVED AND REPLACED AFT OUTFLOW VALVE PER AMM 21-31-12-4 02. OPS TEST GOOD PER AMM 21-31-00-5 02. MEL CLEARED AND PLACARD REMOVED. A/C OK TO CONTINUE.