As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT, AC PRESSURIZED UNTIL 9.3 PSI SWITCHED TO MANUAL AND WAS ABLE TO CONTROL PRESSURIZATION, SWITCHED BACK TO AUTO FOR THE DESCENT AND APPEARED TO OPERATE NORMALLY IN DESCENT. OPERATIONALLY CHECKED PRESSURIZATION SYS IAW MM CH 21-30-00, NO DISCREPANCIES NOTED. OPS CHECKS GOOD.