As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NUMBER 1 OUTFLOW VALVE DEFERRED. AFTER TO #2 OUTFLOW STUCK FULL OPEN. COMPLIED WITH QRH REQUIRED MANUAL CONTROL TO OPEN ON TAXI IN. REMOVED AND REPALACED THE FWD OUTFLAW VALVE ASSY (202HM) I.A.W AMM 21-31-12-04 OPS CHECK PER AMM 21-31-00-5 OPS CHECK PASSED.