As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT DEPARTED, ONCE THE THE AIRCRAFT HAD REACHED ALTITUDE ABOVE FL350, UNABLE TO KEEP PRESSURE CONTROL EITHER VIA AUTO OR MANUAL, CABIN CLIMB OR DESCENT VARIES AT ABOUT 450FPM.BELOW FL340 NORMAL OPS.AIRCRAFT RETURNED TO FOR REPAIRS