As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT FAILED TO PRESSURIZE IN FLIGHT. PERFORMED ENGINE RUN AND PRESSURIZATION OPS CHECK IAW AMM 21-31-00 AND 71-00-00 PERFORMED BITE TEST OF CABIN PRESSURE CONTROLLERS IAW CRJ AMM 21-31-04 NO FAULT MESSAGES SHOW AT THIS TIME ALL OPS CHECK GOOD AT THIS TIME NO DEFECT NOTED