What was found
STL - DURING CLIMB, COULD NOT PRESSURIZE AIRCRAFT. REPLACED FLOW CONTROL VALVE. OPERATIONAL CHECK NORMAL. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
STL - DURING CLIMB, COULD NOT PRESSURIZE AIRCRAFT. REPLACED FLOW CONTROL VALVE. OPERATIONAL CHECK NORMAL. (M)