What was found
AIRCRAFT PRESSURIZATION SYSTEM WENT TO MAXIMUM DELTA P IN AUTO AND STANDBY. AIRCRAFT MANUAL IS BEING TO CONTROL AND DIVERTED TO ORD. *S/D* AUTOMATIC AND STANDBY FUNCTIONS OF PRESSURE CONTROLLER FAILED. REPLACED PRESSURE CONTROLLER.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT PRESSURIZATION SYSTEM WENT TO MAXIMUM DELTA P IN AUTO AND STANDBY. AIRCRAFT MANUAL IS BEING TO CONTROL AND DIVERTED TO ORD. *S/D* AUTOMATIC AND STANDBY FUNCTIONS OF PRESSURE CONTROLLER FAILED. REPLACED PRESSURE CONTROLLER.