As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAB PR SYS 1 FAULT CPC 1 FAILED IN LAST LEG REPORT. R&;R CPC 1 PER AMM 21-31-34 AND OPS CHECKED GOOD PER AMM TASK 21-31-00-710-002-A ROTABLE PARTS CHANGE WAS INDICATED - TT # 1991893 SN OFF 1779 CONTROLLER, CAB OFF 31-2130-9-0001 1779 ON 31-2130-9-0001 8608