As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: PILOT REPORTS DURING DESCENT FROM FL360 TO BELOW 10,000FT, EXPERIENCED RAPID CHANGES IN CABIN CLIMB & DESCENT RATES WITH SMALL CHANGES IN THRUST, FROM + 500 FPM TO - 1500 FPM. MAINTENANCE PERFORMED PRESSURIZATION SYSTEM GROUND TEST AND CONTROLLER BITE TEST IAW AMM 21-31-00. NO FAULTS NOTED. OPS CHECK NORMAL.