As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAB PR SYS 1 & 2 FAULTS IMMEDIATELY AFTER TAKEOFF CONTROLLED PRESSURE MANUALLY. ALSO HAD DOOR AFT R OPEN & CAB PR SAFETY VALVE OPEN .BOTH INDICATIONS WENT AWAY.-R & R # 1 CPC (11HL) AND #2 CPC ( 12HL ) AS PER TSM 21-31-00-810-802A . AND IAW AMM 21-31-34-00-001A.OPS TEST GOOD NO DEFECTS NOTED,. A/C OK FOR SERVICE.