What was found
ACFT WOULD NOT PRESSURIZE IN AUTO OR MANUAL DURING CLIMB OUT, RETURNED TO DEPARTURE. MAINTENANCE INSPECTED AND FOUND GROUND SERVICE FLAPPER OPEN, SECURED CLOSED AND OPS CHECKED PRESSURIZATION SYS, OPS CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ACFT WOULD NOT PRESSURIZE IN AUTO OR MANUAL DURING CLIMB OUT, RETURNED TO DEPARTURE. MAINTENANCE INSPECTED AND FOUND GROUND SERVICE FLAPPER OPEN, SECURED CLOSED AND OPS CHECKED PRESSURIZATION SYS, OPS CHECKED GOOD.