What was found
AFTER T/O, BOTH AUTO PRESS CONTROLLERS FAILED COULD NOT PRESSURIZE A/C IN AUTO. A/C ATB-RETURNED TO STL. REPLACE OUTFLOW VALVE ACTUATOR PER M/M CKS NML.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER T/O, BOTH AUTO PRESS CONTROLLERS FAILED COULD NOT PRESSURIZE A/C IN AUTO. A/C ATB-RETURNED TO STL. REPLACE OUTFLOW VALVE ACTUATOR PER M/M CKS NML.