As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH CABIN PRESSURE REGULATORS FAILED IMMEDIATELY AFTER TAKE-OFF. ACCOMPLISHED BITE CHECKS OF BOTH CABIN PRESSURE CONTROLLERS IAW TSM 21-30-00, AND FOUND BOTH CONTROLLERS FAULTING THE FWD OUTFLOW VALVE. R & R FWD OUTFLOW VALVE IAW MM 21-31-12-04-0. CHECKS GOOD AT THIS TIME. FINAL CLOSED.