As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN WOULD NOT PRESSURIZE NORMALLY. AT 18,000', CABIN WAS CLIMBING AT 1400 PER MIN. AND CABIN ALTITUDE WAS AT 8200' AND CLIMBING. REMOVED AND REPLACED CPC1 AND CPC2 IAW AMM 21-31-34. OPS CHECK GOOD. 70687. PERFORMED STRUCTURAL LEAKAGE TEST IAW AMM 05-53-00-780-003-A01 LEAK TEST WITHIN LIMITS.