As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF FROM CVG A/C DID NOT PRESSURIZE IN AUTO. NOT ABLE TO PRESSURIZE A/C WITH ALTERNATE MODE. FOUND NR 1 DCPC FAIL. T/S PER FIM 21-31 TASK 823-824 AND FIM21-31 TASK 825. REPLACED NR 1 DCPC, CKS GOOD PER FIM 21-31 TASK 825, PRESSURIZED A/C, SYSTEM NORMAL.