What was found
UNABLE TO GET PRESSURE STABILIZED IN CRUISE. CABIN WOULD CLIMB OR DESCEND ON OR -500 FPM IN MANUAL CAUSES 1 PILOT TO BE COMPLETELY DEVOTED TO CONTROLLING THE PRESSURE CABIN WAS ALMOST TOTALLY UNCONTROLLABLE DURING DESCENT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
UNABLE TO GET PRESSURE STABILIZED IN CRUISE. CABIN WOULD CLIMB OR DESCEND ON OR -500 FPM IN MANUAL CAUSES 1 PILOT TO BE COMPLETELY DEVOTED TO CONTROLLING THE PRESSURE CABIN WAS ALMOST TOTALLY UNCONTROLLABLE DURING DESCENT.