What was found
ASH 7138 ORD TO RDU-AIRCRAFT RETURNED TO FIELD BECAUSE THE AIRCRAFT WOULD NOT PRESSURIZE. AIRCRAFT WAS FERRIED TO IAD. MAINTENANCE REPLACED THE SECONDARY OUTFLOW VALVE AND SYSTEM OPS CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ASH 7138 ORD TO RDU-AIRCRAFT RETURNED TO FIELD BECAUSE THE AIRCRAFT WOULD NOT PRESSURIZE. AIRCRAFT WAS FERRIED TO IAD. MAINTENANCE REPLACED THE SECONDARY OUTFLOW VALVE AND SYSTEM OPS CHECKED GOOD.