As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO HOLD PRESSURIZATION. REPLACED OVERHEAD CABIN PRESSURE SELECTOR REF MM21-31-25 AND CABIN PRESSURE CONTROLLER REF MM21-31-21 AND ACCOMPLISHED SYSTEM OPS TEST PER MM21-31-00 ALL CK OK. ALSO PRESSURIZED A-C MANUALLY UP TO 3.5 DIFFERENTIAL ALL CK OK.